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40k Calculation and Quantification @ 2011/07/03 23:04:50


Post by: Canadian 5th


Judging by the 40k v Star Wars thread that was just closed it seems that many people don't understand how to calculate events that happen in the 40k universe. So I'm wondering if people would be interested in my running some numbers as well as posting some work done by Conno MacLeod over at stardestroyer.net. I won't post all of his work, as there are links and a search function for that. I will do my best to get numbers for things people are interested in though.


40k Calculation and Quantification @ 2011/07/04 00:10:06


Post by: purplefood


People don't understand how to calculate events in a fictional (and frankly ridiculous) universe?
We must spread this news!


40k Calculation and Quantification @ 2011/07/04 00:29:01


Post by: Canadian 5th


<post redacted; do not post personal insults, if you want to continue posting on Dakka for long --Janthkin>


40k Calculation and Quantification @ 2011/07/04 00:36:15


Post by: purplefood


Hey...
Don't diss the DCM thing, that's just rude. I only wanted to help keep the site going because i think it's worth it. I was being sarcastic because i think it's funny when people take things like this a touch too serious for their own good.
There's a reason i avoid those threads.


40k Calculation and Quantification @ 2011/07/04 00:42:33


Post by: Coolyo294


You say you aren't going to be spewing the "garbage" that was on the vs. thread, yet you go ahead and make a personal insult against Purple that has nothing to do with the discussion topic at hand? Color me confused.


40k Calculation and Quantification @ 2011/07/04 00:43:10


Post by: Canadian 5th


So you came here to cause trouble then. Reported.


40k Calculation and Quantification @ 2011/07/04 00:44:34


Post by: purplefood


Me?
No i was actually curious at what math you have behind this.
I was wondering how anyone manages to figure anything out considering the relative impossibility of most sci-fi universes and the numbers they tend to use.


40k Calculation and Quantification @ 2011/07/04 00:44:52


Post by: Canadian 5th


coolyo294 wrote:You say you aren't going to be spewing the "garbage" that was on the vs. thread, yet you go ahead and make a personal insult against Purple that has nothing to do with the discussion topic at hand? Color me confused.


He threw the first punch by insulting the very idea of this thread. I also said that they were spewing unresearched garbage, I never said a thing about what I would say. Maybe you should try reading.


Automatically Appended Next Post:
purplefood wrote:Me?
No i was actually curious at what math you have behind this.
I was wondering how anyone manages to figure anything out considering the relative impossibility of most sci-fi universes and the numbers they tend to use.


It's actually pretty easy to do.

For example the math for calculating the energy required to melt a 1,000km block of ice is easy to do. Same with blowing up an asteroid of varying sizes. Blowing up a planet can be done as well. Same with shattering a continent.

For speed you can read the books, or you can watch the movie in the case of Star Wars. We saw a torpedo make a very, very, high G turn in the first movie.


40k Calculation and Quantification @ 2011/07/04 00:48:59


Post by: purplefood


But aren't the varying depictions of these weapons' power different from author to author?
Same for the strength of their armour and shields?


40k Calculation and Quantification @ 2011/07/04 00:54:15


Post by: Emperors Faithful


So hang on, purplefood is the one making an ass out of himself?


It's very difficult to get such measurements for 40k, becuase they don't really go into much detail. Nowhere does it state what sort of energy goes into upholding a gellar field, nor does it say what the energy output of their weapons are.

Sure, you can make comparitive examples. For example, Star Wars shields aren't capable of blocking asteroids (or quickly weaken the shields until one gets through), as seen in ESB. On the other hand, BFG ships have shields that essentially brush aside asteroids (unless the asteroid is nearing the size of the ship itself) per the BFG rules, but the moment that they are without shields and they come into contact with an asteroid there is serious damage (capable of destroying outright smaller escort ships).

The key to doing so in a relaxed and civil manner is, of course, to not be a dick about it if anyone so much as disagrees with you.


40k Calculation and Quantification @ 2011/07/04 01:01:35


Post by: Canadian 5th


purplefood wrote:But aren't the varying depictions of these weapons' power different from author to author?
Same for the strength of their armour and shields?


It's called high and low end values. Generally you look at the factors between the high end, low end, and average examples and figure out a baseline. It's never going to be easy or precise, but you can do it.


40k Calculation and Quantification @ 2011/07/04 01:02:26


Post by: purplefood


Canadian 5th wrote:
purplefood wrote:But aren't the varying depictions of these weapons' power different from author to author?
Same for the strength of their armour and shields?


It's called high and low end values. Generally you look at the factors between the high end, low end, and average examples and figure out a baseline. It's never going to be easy or precise, but you can do it.

That's fairly sneaky... also a touch more logical than most people's ideas.


40k Calculation and Quantification @ 2011/07/04 01:05:26


Post by: Canadian 5th


Emperors Faithful wrote:So hang on, purplefood is the one making an ass out of himself?

It's very difficult to get such measurements for 40k, becuase they don't really go into much detail. Nowhere does it state what sort of energy goes into upholding a gellar field, nor does it say what the energy output of their weapons are.


It can be tough, but isn't really that hard if you're willing to do a little work.

Sure, you can make comparitive examples. For example, Star Wars shields aren't capable of blocking asteroids (or quickly weaken the shields until one gets through), as seen in ESB. On the other hand, BFG ships have shields that essentially brush aside asteroids (unless the asteroid is nearing the size of the ship itself) per the BFG rules, but the moment that they are without shields and they come into contact with an asteroid there is serious damage (capable of destroying outright smaller escort ships).


Ignore the fact that they were in that highly active field, for days at least, and that they likely had shields down for better long range communications and scanning. Not to mention that the ship survived the incident. If an asteroid at that size and speed could really hurt them then they wouldn't need to arm transports with 200 Gigaton/second main guns. Nor would we ships ships capable to melting 1,000km asteroids failing to kill ships in the same weight class.

The key to doing so in a relaxed and civil manner is, of course, to not be a dick about it if anyone so much as disagrees with you.


I'll cut you slack when you can cite sources and produce numbers.


40k Calculation and Quantification @ 2011/07/04 01:06:34


Post by: Emperors Faithful


Canadian 5th wrote:
purplefood wrote:But aren't the varying depictions of these weapons' power different from author to author?
Same for the strength of their armour and shields?


It's called high and low end values. Generally you look at the factors between the high end, low end, and average examples and figure out a baseline. It's never going to be easy or precise, but you can do it.


Then how do you reconcile outright contradictory pieces of canon with one another? Like how apparently several million clones are holding off quintillions of droids.


40k Calculation and Quantification @ 2011/07/04 01:07:57


Post by: Canadian 5th


purplefood wrote:
Canadian 5th wrote:
purplefood wrote:But aren't the varying depictions of these weapons' power different from author to author?
Same for the strength of their armour and shields?


It's called high and low end values. Generally you look at the factors between the high end, low end, and average examples and figure out a baseline. It's never going to be easy or precise, but you can do it.

That's fairly sneaky... also a touch more logical than most people's ideas.


Well, you rarely get authors that go in thinking, well this weapons should be capable of doing X. The authors write stories, not technical reports - not usually at least. Thus it's best if when you see one ship in 40k firing with manual aim and a lone guy with a telescope for targeting they are either very old and from a poor world, or they have recently eaten a ton of damage and were sent out or are still fighting anyway. When we see them running and gunning at long range then that's their top of the line ship from a well off shipyard.


40k Calculation and Quantification @ 2011/07/04 01:08:45


Post by: Asherian Command


*Deleted because mods do not like this reference*

WAIT YOUR INSULTING PURPLEFOOD?
So he answers your question and you insult him? Wha?

You sir are stepping a fine line between oh noes and *BANNED*


40k Calculation and Quantification @ 2011/07/04 01:10:38


Post by: Canadian 5th


Emperors Faithful wrote:
Canadian 5th wrote:
purplefood wrote:But aren't the varying depictions of these weapons' power different from author to author?
Same for the strength of their armour and shields?


It's called high and low end values. Generally you look at the factors between the high end, low end, and average examples and figure out a baseline. It's never going to be easy or precise, but you can do it.


Then how do you reconcile outright contradictory pieces of canon with one another? Like how apparently several million clones are holding off quintillions of droids.


Given that her number wasn't actually canon given the fact that officially the word from the owners of the Star Wars property is that a book can only be canon if it doesn't contradict a higher source. Thus, because of what we see in the movies and the fact that other sources mention thousands of ships, a number that wouldn't be needed for so few clones, it gets discounted. Also, her work has been discounted by several other sources within the company and the author has actually made threats against fans online and has been cited as actually aiming to troll the fanbase. We can only be glad she's working on Gears of War stuff now.


40k Calculation and Quantification @ 2011/07/04 01:10:47


Post by: purplefood


Asherian Command wrote:Wow this dude is as bad as Gibralthe XD
As long as he doesn't threat to rape our families i think he will be fine....

WAIT YOUR INSULTING PURPLEFOOD?
So he answers your question and you insult him? Wha?

You sir are stepping a fine line between oh noes and *BANNED*

I totally didn't answer his question.
He can be angry if he likes though i'm a touch confused about his reaction. Lets just drop it and put it behind us like the mature people we all pretend we are... now who wants an ice cream?


40k Calculation and Quantification @ 2011/07/04 01:11:05


Post by: Canadian 5th


Asherian Command wrote:Wow this dude is as bad as Gibralthe XD
As long as he doesn't threat to rape our families i think he will be fine....

WAIT YOUR INSULTING PURPLEFOOD?
So he answers your question and you insult him? Wha?

You sir are stepping a fine line between oh noes and *BANNED*


You sir have added nothing to this thread.


Automatically Appended Next Post:
purplefood wrote:
Asherian Command wrote:Wow this dude is as bad as Gibralthe XD
As long as he doesn't threat to rape our families i think he will be fine....

WAIT YOUR INSULTING PURPLEFOOD?
So he answers your question and you insult him? Wha?

You sir are stepping a fine line between oh noes and *BANNED*

I totally didn't answer his question.
He can be angry if he likes though i'm a touch confused about his reaction. Lets just drop it and put it behind us like the mature people we all pretend we are... now who wants an ice cream?


Given the attitude on this board towards actually doing math and, heck, even typing in proper English I took your first post as more of the same ignorant and tiresome attitude.


40k Calculation and Quantification @ 2011/07/04 01:16:31


Post by: Asherian Command


purplefood wrote:
Asherian Command wrote:Wow this dude is as bad as Gibralthe XD
As long as he doesn't threat to rape our families i think he will be fine....

WAIT YOUR INSULTING PURPLEFOOD?
So he answers your question and you insult him? Wha?

You sir are stepping a fine line between oh noes and *BANNED*

I totally didn't answer his question.
He can be angry if he likes though i'm a touch confused about his reaction. Lets just drop it and put it behind us like the mature people we all pretend we are... now who wants an ice cream?

How'd you know i wanted ice cream
To the freezer!
In all seriousness Canadian8th please for the love of all thats holy stop bickering and asking where are sources are because literally sometimes we have something called a lexcanum and codexes.
We don't have numbers because we can't find.
The only one of us that can do calculations is Ivan who no-longer debates because he is too good at it. (OR hes banned I don't know XD)


40k Calculation and Quantification @ 2011/07/04 01:19:14


Post by: Canadian 5th


Asherian Command wrote:
purplefood wrote:
Asherian Command wrote:Wow this dude is as bad as Gibralthe XD
As long as he doesn't threat to rape our families i think he will be fine....

WAIT YOUR INSULTING PURPLEFOOD?
So he answers your question and you insult him? Wha?

You sir are stepping a fine line between oh noes and *BANNED*

I totally didn't answer his question.
He can be angry if he likes though i'm a touch confused about his reaction. Lets just drop it and put it behind us like the mature people we all pretend we are... now who wants an ice cream?

How'd you know i wanted ice cream
To the freezer!
In all seriousness Canadian8th please for the love of all thats holy stop bickering and asking where are sources are because literally sometimes we have something called a lexcanum and codexes.
We don't have numbers because we can't find.
The only one of us that can do calculations is Ivan who no-longer debates because he is too good at it. (OR hes banned I don't know XD)


You guys actually have plenty of quantifiable scenes be they from codex, novel, or game cutscene. If you're too lazy to put the level of work required to win a debate beyond just dogpiling and spamming people with useless stuff then don't debate. If you can't do the simple math that such calculation requires then ask somebody else for help, or give up.


40k Calculation and Quantification @ 2011/07/04 01:21:09


Post by: purplefood


Well this is going to end well...
Still i like the idea. If i was any good at maths or could be bothered to put the work in i might try it.
As it is i would be interested in the results...


40k Calculation and Quantification @ 2011/07/04 01:22:30


Post by: Asherian Command


Why aren't you getting from this that Gamesworkshop does not provide us with these calculations they only say they did this much damage and thats it.


40k Calculation and Quantification @ 2011/07/04 01:22:56


Post by: Canadian 5th


purplefood wrote:Well this is going to end well...
Still i like the idea. If i was any good at maths or could be bothered to put the work in i might try it.
As it is i would be interested in the results...


The Grand 40k Calculation Thread

You are welcome.


40k Calculation and Quantification @ 2011/07/04 01:23:03


Post by: Emperors Faithful


Canadian 5th wrote:
Emperors Faithful wrote:So hang on, purplefood is the one making an ass out of himself?

It's very difficult to get such measurements for 40k, becuase they don't really go into much detail. Nowhere does it state what sort of energy goes into upholding a gellar field, nor does it say what the energy output of their weapons are.


It can be tough, but isn't really that hard if you're willing to do a little work.


Enlighten me. Onus is on you here, after all.


Sure, you can make comparitive examples. For example, Star Wars shields aren't capable of blocking asteroids (or quickly weaken the shields until one gets through), as seen in ESB. On the other hand, BFG ships have shields that essentially brush aside asteroids (unless the asteroid is nearing the size of the ship itself) per the BFG rules, but the moment that they are without shields and they come into contact with an asteroid there is serious damage (capable of destroying outright smaller escort ships).


Ignore the fact that they were in that highly active field, for days at least,


So you can cite a source where it says that the asteroid field was unusually active, and that the ships had been out there for days. Becuase right now it looks like these excuses are your own personal speculations.

and that they likely had shields down for better long range communications and scanning.


They had shields down? Shields up affect communications and scanning? Oh right, this is more of that speculation that you seem to hate so much.

Not to mention that the ship survived the incident.


Yeah, as would most ships in the Imperial Navy with shields down (unless you rolled like an absolute champion on the Critical Damage table).

If an asteroid at that size and speed could really hurt them then they wouldn't need to arm transports with 200 Gigaton/second main guns.


And how does this measure up to Imperial Navy ship's shields just brushing aside asteroids?

Nor would we ships ships capable to melting 1,000km asteroids failing to kill ships in the same weight class.


"Now would we see ship capable..."?

I'm not saying an ISD couldn't go toe-to-toe with a Cobra Class Escort (in fact it would probably come off better as energy weapons have greater accuracy than ordnance). All I've done is show how you can compare the difference in shield strength.

The key to doing so in a relaxed and civil manner is, of course, to not be a dick about it if anyone so much as disagrees with you.


I'll cut you slack when you can cite sources and produce numbers.


Firstly, what more can I do? What I've told you is simply from the BFG rules for moving through Asteroid fields. If you don't believe me, GW still has the BFG rules sheet on it's website I think, and you can check for yourself.
Secondly, that dick thing I was talking about? You're still failing at it.

http://www.games-workshop.com/gws/content/article.jsp?catId=cat480005a&categoryId=1100007§ion=&aId=4300022


40k Calculation and Quantification @ 2011/07/04 01:24:10


Post by: purplefood


Canadian 5th wrote:
purplefood wrote:Well this is going to end well...
Still i like the idea. If i was any good at maths or could be bothered to put the work in i might try it.
As it is i would be interested in the results...


The Grand 40k Calculation Thread

You are welcome.

Ah...
Much obliged.


40k Calculation and Quantification @ 2011/07/04 01:24:36


Post by: Canadian 5th


Asherian Command wrote:Why aren't you getting from this that Gamesworkshop does not provide us with these calculations they only say they did this much damage and thats it.


So, until the release of the most recent ICS nobody had given Star Wars any hard numbers either. Also, GW gives you descriptions of damage that you can scale from with some google-fu and very basic math. I just linked to an entire thread of calculations for 40k.


Automatically Appended Next Post:
purplefood wrote:
Canadian 5th wrote:
purplefood wrote:Well this is going to end well...
Still i like the idea. If i was any good at maths or could be bothered to put the work in i might try it.
As it is i would be interested in the results...


The Grand 40k Calculation Thread

You are welcome.

Ah...
Much obliged.


No problem, sorry for the mix up at the start. I'm glad I never bother clicking the little yellow button now.


40k Calculation and Quantification @ 2011/07/04 01:27:03


Post by: Emperors Faithful


Canadian 5th wrote:
Emperors Faithful wrote:
Canadian 5th wrote:
purplefood wrote:But aren't the varying depictions of these weapons' power different from author to author?
Same for the strength of their armour and shields?


It's called high and low end values. Generally you look at the factors between the high end, low end, and average examples and figure out a baseline. It's never going to be easy or precise, but you can do it.


Then how do you reconcile outright contradictory pieces of canon with one another? Like how apparently several million clones are holding off quintillions of droids.


Given that her number wasn't actually canon given the fact that officially the word from the owners of the Star Wars property is that a book can only be canon if it doesn't contradict a higher source. Thus, because of what we see in the movies and the fact that other sources mention thousands of ships, a number that wouldn't be needed for so few clones, it gets discounted. Also, her work has been discounted by several other sources within the company and the author has actually made threats against fans online and has been cited as actually aiming to troll the fanbase. We can only be glad she's working on Gears of War stuff now.


So the movies are a reliable basis for looking at standard range in SW naval engagements now? Cool.

But also by that standard, quintillions of droids can be easily discounted, since they couldn't even be transported by hundreds of thousands of ships.


40k Calculation and Quantification @ 2011/07/04 01:35:09


Post by: purplefood


Canadian 5th wrote:
purplefood wrote:
Canadian 5th wrote:
purplefood wrote:Well this is going to end well...
Still i like the idea. If i was any good at maths or could be bothered to put the work in i might try it.
As it is i would be interested in the results...


The Grand 40k Calculation Thread

You are welcome.

Ah...
Much obliged.


No problem, sorry for the mix up at the start. I'm glad I never bother clicking the little yellow button now.

I'm glad you didn't as well
For what it's worth i apologise for any offense i caused.


40k Calculation and Quantification @ 2011/07/04 01:35:39


Post by: Asherian Command


Canadian 5th wrote:
Asherian Command wrote:Why aren't you getting from this that Gamesworkshop does not provide us with these calculations they only say they did this much damage and thats it.


So, until the release of the most recent ICS nobody had given Star Wars any hard numbers either. Also, GW gives you descriptions of damage that you can scale from with some google-fu and very basic math. I just linked to an entire thread of calculations for 40k.

so your asking me a map developer a guy who just writes things and argues with lore and reads history. And is a history guy, and you tell him to do math. Good luck with that XD. (JK i am also a math guy but I am only in algebra 2) But its all fine and good just don't insult me i'm sensitive to hate.


40k Calculation and Quantification @ 2011/07/04 01:42:05


Post by: Emperors Faithful


Nice link, though.


40k Calculation and Quantification @ 2011/07/04 01:58:14


Post by: Canadian 5th


Emperors Faithful wrote:
Canadian 5th wrote:
Emperors Faithful wrote:
Canadian 5th wrote:
purplefood wrote:But aren't the varying depictions of these weapons' power different from author to author?
Same for the strength of their armour and shields?


It's called high and low end values. Generally you look at the factors between the high end, low end, and average examples and figure out a baseline. It's never going to be easy or precise, but you can do it.


Then how do you reconcile outright contradictory pieces of canon with one another? Like how apparently several million clones are holding off quintillions of droids.


Given that her number wasn't actually canon given the fact that officially the word from the owners of the Star Wars property is that a book can only be canon if it doesn't contradict a higher source. Thus, because of what we see in the movies and the fact that other sources mention thousands of ships, a number that wouldn't be needed for so few clones, it gets discounted. Also, her work has been discounted by several other sources within the company and the author has actually made threats against fans online and has been cited as actually aiming to troll the fanbase. We can only be glad she's working on Gears of War stuff now.


So the movies are a reliable basis for looking at standard range in SW naval engagements now? Cool.

But also by that standard, quintillions of droids can be easily discounted, since they couldn't even be transported by hundreds of thousands of ships.


The ranges we see in the movies are for a fight where the rebels closed in to limit the DSII's fire arcs. The other is under a planetary shield forcing them close.


40k Calculation and Quantification @ 2011/07/04 02:13:28


Post by: Emperors Faithful


Canadian 5th wrote:
Emperors Faithful wrote:
Canadian 5th wrote:
Emperors Faithful wrote:
Canadian 5th wrote:
purplefood wrote:But aren't the varying depictions of these weapons' power different from author to author?
Same for the strength of their armour and shields?


It's called high and low end values. Generally you look at the factors between the high end, low end, and average examples and figure out a baseline. It's never going to be easy or precise, but you can do it.


Then how do you reconcile outright contradictory pieces of canon with one another? Like how apparently several million clones are holding off quintillions of droids.


Given that her number wasn't actually canon given the fact that officially the word from the owners of the Star Wars property is that a book can only be canon if it doesn't contradict a higher source. Thus, because of what we see in the movies and the fact that other sources mention thousands of ships, a number that wouldn't be needed for so few clones, it gets discounted. Also, her work has been discounted by several other sources within the company and the author has actually made threats against fans online and has been cited as actually aiming to troll the fanbase. We can only be glad she's working on Gears of War stuff now.


So the movies are a reliable basis for looking at standard range in SW naval engagements now? Cool.

But also by that standard, quintillions of droids can be easily discounted, since they couldn't even be transported by hundreds of thousands of ships.


The ranges we see in the movies are for a fight where the rebels closed in to limit the DSII's fire arcs. The other is under a planetary shield forcing them close.


And the Clone Wars engagements?

BTW, completely ignoring other points in a person's argument is generally considered poor form.


40k Calculation and Quantification @ 2011/07/04 02:16:20


Post by: Canadian 5th


Emperors Faithful wrote:And the Clone Wars engagements?

BTW, completely ignoring other points in a person's argument is generally considered poor form.


Completely ignored, how did I ignore anything you asked about the movies and I answered by pointing out that we see all of two major space battles in the movies. One at the start of Episode III under a shield which forces a close fight, and the other an ambush where they did something unusual by closing in to limit fire arcs.

As for the Cartoons, they aren't on the same level of canon as the movies and are actually even below the books. The events shown happened, but not always the exact same way.


40k Calculation and Quantification @ 2011/07/04 02:18:51


Post by: Commisar Wolfie


How do you assign factual numbers and equations to things that don't actually exist and for technology that we have no way of truly understanding how any of it works let alone what it is all capable of


40k Calculation and Quantification @ 2011/07/04 02:20:38


Post by: Canadian 5th


Commisar Wolfie wrote:How do you assign factual numbers and equations to things that don't actually exist and for technology that we have no way of truly understanding how any of it works let alone what it is all capable of


Easy, if to blows up a rock it blows up a rock. You can determine the energy input that feat takes by some basic math. If a large ball of ice melts, then you can do the same. You don't need to know how something works to know what it can do.


40k Calculation and Quantification @ 2011/07/04 02:22:41


Post by: Commisar Wolfie


But how do you even know what it is actually capable of doing? Since half of the technology and items used in both "make-believe" worlds in now way exist in our world.


40k Calculation and Quantification @ 2011/07/04 02:28:48


Post by: Canadian 5th


Commisar Wolfie wrote:But how do you even know what it is actually capable of doing? Since half of the technology and items used in both "make-believe" worlds in now way exist in our world.


A direct energy weapon like a turbolaser, or a big gun, or a lance battery, is pretty easy stuff. It's job is to send a destructive amount of energy into something. Thus when you see a flash of light blow up an asteroid, if you can figure out the size of the rock, you can get an idea of how much energy it would take to do that. For things like FTL travel, you can look at scenes from the books and movies. In the case of 40k it can be between arrive before you left, years late, and never come back. In Star Wars it's hours for fast ships in an emergency and a week for a slow bulk goods cargo ship. Shields can often be based on weapons strengths, if shields are lower powered than weapons combat will tend to be shorter or more brutal like in 40k or Trek, if they are more even you will tend to see longer battles with less damage and less ships lost.


40k Calculation and Quantification @ 2011/07/04 02:33:58


Post by: Commisar Wolfie


ok still not really answering the question. Lets you wacth me break a rock with a sledge hammer. You have no way of knowing if i used minimal force to break it or if i used all my force to break it. All you know is I broke a rock with a sledge hammer. (I know it not a perfect example) So in this same vein how do you know what power level weapons are fireing at and if they are at maximum or minimal or somewhere in between and what said weapons are capable of.


40k Calculation and Quantification @ 2011/07/04 02:39:02


Post by: Canadian 5th


Commisar Wolfie wrote:ok still not really answering the question. Lets you wacth me break a rock with a sledge hammer. You have no way of knowing if i used minimal force to break it or if i used all my force to break it. All you know is I broke a rock with a sledge hammer. (I know it not a perfect example) So in this same vein how do you know what power level weapons are fireing at and if they are at maximum or minimal or somewhere in between and what said weapons are capable of.


You don't know if any one example is the highest or the lowest. You need to look at more than one example to determine if that event was higher or lower than average in power. In the case of Star Wars the asteroid scene is average for lighter weapons on a large ship. We already knew that fighters had kiloton yield main weapons and mid megaton to low gigaton scale projectiles. Thus the scene fits with no added work.


40k Calculation and Quantification @ 2011/07/04 02:48:42


Post by: Commisar Wolfie


Ok for that one scene what about others? What about 40K where things change depending on the edition and author? Plus very very very few motion picture examples like star wars. Which seems to be the only thing you know about and so in no way could you give any unbiased opinion.


40k Calculation and Quantification @ 2011/07/04 02:53:30


Post by: Canadian 5th


Commisar Wolfie wrote:Ok for that one scene what about others? What about 40K where things change depending on the edition and author? Plus very very very few motion picture examples like star wars. Which seems to be the only thing you know about and so in no way could you give any unbiased opinion.


Sorry, I know Star Wars and many examples are brought back to the movies to see if they fit or not. In 40k you do the same thing and then work out if it was a different era that the ship is from, the condition of the ship/gun/tank, and then work from there. I even posted an entire page of threads on this subject for 40k.


40k Calculation and Quantification @ 2011/07/04 02:58:20


Post by: Commisar Wolfie


Ok but in your opening post you were offering to run the numbers. But you just stated that your knowledge lies with SW and not in 40K. Infact you want somebody else to do all the number crunching for 40K. Very well I will do my "math" and you can do yours.
bolt pistol power = infinty
bolter power = inifinty
lascannon power = infinity

should I keep going?


40k Calculation and Quantification @ 2011/07/04 03:06:25


Post by: Canadian 5th


Commisar Wolfie wrote:Ok but in your opening post you were offering to run the numbers. But you just stated that your knowledge lies with SW and not in 40K. Infact you want somebody else to do all the number crunching for 40K. Very well I will do my "math" and you can do yours.
bolt pistol power = infinty
bolter power = inifinty
lascannon power = infinity

should I keep going?


Actually I said I would do it if people asked. I also pointed them to works done by somebody else who's math is good and who is fairly impartial overall.

As for your numbers, what basis do you have? If a bolter was of infinite power then the recoild would be horrific and you wouldn't want to stand near it or it would light the atmosphere on fire. Also, given that bolters can't defeat all armor first try, does that mean armor is often infinite+ or even infinite++? Also, why would you need a lascannon if a bolter was already of infinite power.

See, your method has holes I can drive a truck through. Can you say that I'm wrong when I say that melting a 1,000km block of ice releases around 1.5x10^26 joules of energy?


40k Calculation and Quantification @ 2011/07/04 03:10:44


Post by: Commisar Wolfie


All im saying is fake math is fake math regardless of how fancy you make it. and that is exactly what my basis was. Your makeing up numbers for things that do not exist except in the imagination of the creators and fans and so therefore can not be assigned any value in the real world because it is not real. So I used my imaginary numbers and imaginary facts to come up with my imiginary facts to dispute your imiginary numbers.


40k Calculation and Quantification @ 2011/07/04 03:16:26


Post by: Canadian 5th


Commisar Wolfie wrote:All im saying is fake math is fake math regardless of how fancy you make it. and that is exactly what my basis was. Your makeing up numbers for things that do not exist except in the imagination of the creators and fans and so therefore can not be assigned any value in the real world because it is not real. So I used my imaginary numbers and imaginary facts to come up with my imiginary facts to dispute your imiginary numbers.


Except that your numbers have no basis in the fluff of the game world you're reading about. A bolter that can blow a regular person in half so long as that person isn't wearing armor isn't the next page going to blow up a tank through the frontal armor. If a gun makes a giant crater and kills tanks with single hits in one book, unless it has a good reason to do something else the author will tend to make a big gun blow up big holes in the next and other authors likely will as well. Lasguns are actually among the things with the most varied description, next are bolters, after that things tend to fall in line more.

Example, if an asteroid of say 25m diameter is blown up by an energy weapon, how much energy does that take?

Or, if I melt a 1m cube of ice how much energy do I need?


40k Calculation and Quantification @ 2011/07/04 03:45:55


Post by: Psienesis


A bolter that can blow a regular person in half so long as that person isn't wearing armor isn't the next page going to blow up a tank through the frontal armor


This is 40k, it just *might* do that.

Also, all of 40k's visual media... as defined by video games and (a) movie... are decidedly "non-canon" in their depiction of units, fighting style, weapon power and so forth. Those make for interesting visual spectacle, but in no way, shape or form conform to anything printed regarding the actual game-mechanics or effects of weapons.

If you took DoW: Soulstorm as an example, you would believe that the IG fields lascannons with fully-automatic fire and a limitless ammunition supply, and that the IG would declare that the Space Marines and the Sisters of Battle were both groups of "extremists" that should be purged from their world.

Yeah... it doesn't work that way in 40K.

About the asteroid... what's it made out of? Porous rock? Calcite? Titanium? Admantium? Unobtanium?


40k Calculation and Quantification @ 2011/07/04 03:51:36


Post by: Commisar Wolfie


We're still argueing who has the better make-believe world


40k Calculation and Quantification @ 2011/07/04 04:07:03


Post by: Canadian 5th


Psienesis wrote:
A bolter that can blow a regular person in half so long as that person isn't wearing armor isn't the next page going to blow up a tank through the frontal armor


This is 40k, it just *might* do that.

Also, all of 40k's visual media... as defined by video games and (a) movie... are decidedly "non-canon" in their depiction of units, fighting style, weapon power and so forth. Those make for interesting visual spectacle, but in no way, shape or form conform to anything printed regarding the actual game-mechanics or effects of weapons.

If you took DoW: Soulstorm as an example, you would believe that the IG fields lascannons with fully-automatic fire and a limitless ammunition supply, and that the IG would declare that the Space Marines and the Sisters of Battle were both groups of "extremists" that should be purged from their world.

Yeah... it doesn't work that way in 40K.

About the asteroid... what's it made out of? Porous rock? Calcite? Titanium? Admantium? Unobtanium?


Show me an example of weapons power varying by that many orders of magnitude in 40k?

Who says the movie is non-canon? It was approved by GW and doesn't show anything that is inconsistent with the novels. You'll also notice that I said game cutscenes, the events of the games actual story are considered canon though. So all that dumb Blood Angels stuff really did happen.

Funny, I think it does. As does somebody who has run the numbers for years now for the 40k universe.

Generally based on appearance they are assumed to be nickel iron as that fits and is a common type. However you can run them as the lowest energy you can find that still fits, thus they couldn't be ice or rubble piles loosely bound by ice and gravity. They can be rocky asteroids, and the calculations have been done for granite, nickel iron, and silicone. Guess which takes more energy?


40k Calculation and Quantification @ 2011/07/04 08:49:32


Post by: Emperors Faithful


Canadian 5th wrote:
Emperors Faithful wrote:And the Clone Wars engagements?

BTW, completely ignoring other points in a person's argument is generally considered poor form.


Completely ignored, how did I ignore anything, you asked about the movies and I answered by pointing out that we see all of two major space battles in the movies.


You ignored this. And you also ignored my comment on the quintillions of droids.

Emperors Faithful wrote:
Canadian 5th wrote:
Emperors Faithful wrote:So hang on, purplefood is the one making an ass out of himself?

It's very difficult to get such measurements for 40k, becuase they don't really go into much detail. Nowhere does it state what sort of energy goes into upholding a gellar field, nor does it say what the energy output of their weapons are.


It can be tough, but isn't really that hard if you're willing to do a little work.


Enlighten me. Onus is on you here, after all.


Sure, you can make comparitive examples. For example, Star Wars shields aren't capable of blocking asteroids (or quickly weaken the shields until one gets through), as seen in ESB. On the other hand, BFG ships have shields that essentially brush aside asteroids (unless the asteroid is nearing the size of the ship itself) per the BFG rules, but the moment that they are without shields and they come into contact with an asteroid there is serious damage (capable of destroying outright smaller escort ships).


Ignore the fact that they were in that highly active field, for days at least,


So you can cite a source where it says that the asteroid field was unusually active, and that the ships had been out there for days. Becuase right now it looks like these excuses are your own personal speculations.

and that they likely had shields down for better long range communications and scanning.


They had shields down? Shields up affect communications and scanning? Oh right, this is more of that speculation that you seem to hate so much.

Not to mention that the ship survived the incident.


Yeah, as would most ships in the Imperial Navy with shields down (unless you rolled like an absolute champion on the Critical Damage table).

If an asteroid at that size and speed could really hurt them then they wouldn't need to arm transports with 200 Gigaton/second main guns.


And how does this measure up to Imperial Navy ship's shields just brushing aside asteroids?

Nor would we ships ships capable to melting 1,000km asteroids failing to kill ships in the same weight class.


"Now would we see ship capable..."?

I'm not saying an ISD couldn't go toe-to-toe with a Cobra Class Escort (in fact it would probably come off better as energy weapons have greater accuracy than ordnance). All I've done is show how you can compare the difference in shield strength.

The key to doing so in a relaxed and civil manner is, of course, to not be a dick about it if anyone so much as disagrees with you.


I'll cut you slack when you can cite sources and produce numbers.


Firstly, what more can I do? What I've told you is simply from the BFG rules for moving through Asteroid fields. If you don't believe me, GW still has the BFG rules sheet on it's website I think, and you can check for yourself.
Secondly, that dick thing I was talking about? You're still failing at it.

http://www.games-workshop.com/gws/content/article.jsp?catId=cat480005a&categoryId=1100007§ion=&aId=4300022






One at the start of Episode III under a shield which forces a close fight, and the other an ambush where they did something unusual by closing in to limit fire arcs.

As for the Cartoons, they aren't on the same level of canon as the movies and are actually even below the books. The events shown happened, but not always the exact same way.


Okay, there's obviously some official high-end source that not only says that the Space Battles in the Clone Wars Cartoons and movies (I can't recall anywhere where it said that they were engaging underneath the planetary shields) are incorrect, but it replaces these incorrect sources with a definite example that SW naval engagements ussually occur hundreds thousands of kilometres apart. I'd still like to see it.


40k Calculation and Quantification @ 2011/07/04 09:09:44


Post by: Raxmei


Whoever started talking about Star Wars is threadjacking and defying moderator action by resuming a locked discussion. This isn't the 40k vs Star Wars thread.


40k Calculation and Quantification @ 2011/07/04 09:37:15


Post by: Canadian 5th


Emperors Faithful wrote:You ignored this. And you also ignored my comment on the quintillions of droids.


I was talking to like 3 people, I missed it.

Emperors Faithful wrote:Enlighten me. Onus is on you here, after all.


You can do some of your own work, it's not on me to do everything here.


So you can cite a source where it says that the asteroid field was unusually active, and that the ships had been out there for days. Becuase right now it looks like these excuses are your own personal speculations.


Most asteroid fields don't contain rocks bashing into each other nor with that level of density. From wikipedia on our own asteroid field:

The remaining bodies range down to the size of a dust particle. The asteroid material is so thinly distributed that multiple unmanned spacecraft have traversed it without incident. Nonetheless, collisions between large asteroids do occur, and these can form an asteroid family whose members have similar orbital characteristics and compositions.

The Hoth field was clearly dense enough that an unmanned probe that is unable to do much course correction would have been destroyed.

On the field's density and activity:

wookiepedia wrote:The Hoth asteroid field, also known as the Anoat Asteroid Belt, was an extensive, wildly erratic asteroid belt occupying the farthest orbit of the Hoth system in the Outer Rim Territories. Forged as the resulting effect of a collision between two rocky planets eons prior to the Galactic Civil War, the belt was a favored sanctuary for smugglers and pirates alike hoping to elude legal authority. The field was rich in untapped mineral resources such as metal ore, a magnet for mining prospectors hoping to make a fortune. The chaotic nature of the asteroid field sent a constant bombardment of meteorites to the surface of Hoth, the system's sixth planet.


On the time spent in the field:

wookiepedia wrote:The Millennium Falcon spent several days hiding within the massive asteroid while Solo and his passengers worked to repair the ship's faulty hyperdrive.[1] Solo cleverly shut down the ship's primary systems in order to avoid detection by the probing Imperial ships the group could hear overhead trying to chase them out. It was while cooped up within the close confines of the Millennium Falcon for several days that the longstanding romantic tensions between Solo and Organa first began to blossom. The princess finally warmed to Solo's roguish charms as they shared one of their first kisses within the deep innards of the asteroid.

However, it was not the might of the Imperial Navy that eventually flushed the Millennium Falcon out of its hiding place. The group soon discovered that mynocks living inside of the cavern had attached themselves to the ship's power cables, leeching the ship of its energy. While clearing the ship of the parasites, Solo and Chewbacca unwittingly discovered the true nature of their hiding spot. Stray blaster bolts fired into the walls of the cave had strangely caused the grotto to shake violently. It was not a simple cave that Solo had hidden his ship in, but the nesting area of a giant exogorth. Solo was able to pilot his ship out of the closing jaws of the massive space slug with only seconds to spare, but at the expense of knowing they would once again be engaged by the Imperial fleet.[2] The existence of an enormous space slug within the asteroid field had been written off as spacer legend until Solo's run-in with the creature. However, some continued to disbelieve the story, based on Solo's reputation for exaggeration.


[1] Galaxy Guide 3: The Empire Strikes Back, Second Edition
[2] Star Wars Episode V

They had shields down? Shields up affect communications and scanning? Oh right, this is more of that speculation that you seem to hate so much.


I can't find a source for that, so I may have misremembered.

Yeah, as would most ships in the Imperial Navy with shields down (unless you rolled like an absolute champion on the Critical Damage table).


So the IoM has lost ships to asteroid fields then.

Anyway, the Avenger, the ship struck, survived with 'damage' we don't hear how much damage.

wookiepedia wrote:The Avenger was the only ship attached to Death Squadron that managed to stay with the Falcon through the entirety of the asteroid field, earning the warship a reputation for persistence among the Imperial Navy. Needa had sent his Star Destroyer headfirst into the asteroids as Vader had commanded, sustaining substantial damage in the process. It was all his gunnery crews could do to try and keep up with the endless task of trying to shoot down the rocky debris in the Star Destroyer's path. So, when Solo suddenly and unexpectedly banked the Millennium Falcon on an attack course straight for the pursuing Avenger, Needa and his crew were ill-prepared and lost the Rebel ship for good.[1]



[1] Galaxy Guide 3: The Empire Strikes Back, Second Edition

And how does this measure up to Imperial Navy ship's shields just brushing aside asteroids?


Well, a 40 metre wide asteroid such as in the Hoth field striking with a relative speed of between 40m/s and 200m/s would impart an energy of between 0.05 kilotons and 1.2 kilotons. So they clearly weren't the primary threat to the ISD. However the lone ISD that is noted to be damaged was the same ship that was also hit by an ion cannon right before starting the chase. Thus it was likely that it was still recovering from battle damage and that Needa did the same thing as an 40k captain and pushed in with a ship that should have seen a repair dock.

A source for it having been disabled is here:

wookiepedia wrote:The Avenger was later reassigned to Death Squadron and served as the lead attack ship at Hoth. During the course of the battle, the Avenger was disabled. [3]


[3]A Guide to the Star Wars Universe, Third Edition

We know that damage from such weapons can be repaired, but we don't know to what extent they had time to fix things before taking multiple asteroid impacts. Also, being forced to fire her weapons for days on end to keep asteroids away would have placed a strain on the ships power systems, so that is another factor. A damaged ship was forced right into a hostile situation where it was fighting for days without proper repair and refit. Thus it's not really the best representation of how much punishment a ship can take.

"Now would we see ship capable..."?

I'm not saying an ISD couldn't go toe-to-toe with a Cobra Class Escort (in fact it would probably come off better as energy weapons have greater accuracy than ordnance). All I've done is show how you can compare the difference in shield strength.


You're going to need to show that bigger equals more powerful if you think the best an ISD can take is a Cobra.

Firstly, what more can I do? What I've told you is simply from the BFG rules for moving through Asteroid fields. If you don't believe me, GW still has the BFG rules sheet on it's website I think, and you can check for yourself.


Great, and in Star Wars games a lone fighter beats an ISD and Marines can be killed by a lone grot at least some of the time. Game mechanics aren't evidence for a debate or I could prove that any Star Wars fighter can bring down a ship many times larger than itself, that people in the Star Wars universe can heal by picking up health kits, and that no matter how many weapons you carry you never get encumbered. I could also show that lascannons have a range of under a hundred meters.

I bet you dislike your own rules now don't you?

Asking you to do your own work is being a dick?

Okay, there's obviously some official high-end source that not only says that the Space Battles in the Clone Wars Cartoons and movies (I can't recall anywhere where it said that they were engaging underneath the planetary shields) are incorrect, but it replaces these incorrect sources with a definite example that SW naval engagements ussually occur hundreds thousands of kilometres apart. I'd still like to see it.


Why would sources list effective range for a ship as being 10 light minutes if it was never used? I'll need to dosome poking to find exact examples for longer range engagements, but they certainly do exist.


Automatically Appended Next Post:
Raxmei wrote:Whoever started talking about Star Wars is threadjacking and defying moderator action by resuming a locked discussion. This isn't the 40k vs Star Wars thread.


It's my thread, we can debate this if we like. If a mod has an issue with the topic, and not the way it was being talked about then they can deal with it. You're not a mod so stop pretending we need to care.


40k Calculation and Quantification @ 2011/07/04 11:14:50


Post by: reds8n


I can appreciate exactly how super serious this is, but let's not get too snarky here please people.


40k Calculation and Quantification @ 2011/07/04 11:31:46


Post by: Conservationist


I wouldn't mind having some values to work with in the future, if you can work if out, by all means! You have my blessings on this. The Emperor protects.


40k Calculation and Quantification @ 2011/07/04 11:54:05


Post by: Canadian 5th


If only your fellows were so polite.

I'll do what I can on that front when it isn't near 5am.


40k Calculation and Quantification @ 2011/07/04 13:59:48


Post by: Kilkrazy


If people are to make any comparison you have to start with the assumption that basic rules of physics, chemistry and mathematics are the same in the SF universes to be examined and the modern day, except where needed to allow science fictiony things such as FTL travel.


40k Calculation and Quantification @ 2011/07/04 14:18:59


Post by: Canadian 5th


Kilkrazy wrote:If people are to make any comparison you have to start with the assumption that basic rules of physics, chemistry and mathematics are the same in the SF universes to be examined and the modern day, except where needed to allow science fictiony things such as FTL travel.


Yup, you also need to treat what you see on screen or in text as a real account of what happened unless given reason to do otherwise.


40k Calculation and Quantification @ 2011/07/04 14:30:19


Post by: Kilkrazy


Yes, and what happens if the description conflicts with reality.

For example, it takes a certain amount of energy for the human body to maintain itself, move around and do work. There is no way around this because the energy contained in molecules is a factor of chemical laws.

Therefore the idea of a food pill is nonsense. Even if you found a way to compress a day's rations into a pill-sized table, it would still weight the same as a day's rations.


40k Calculation and Quantification @ 2011/07/04 14:38:32


Post by: Canadian 5th


Kilkrazy wrote:Yes, and what happens if the description conflicts with reality.

For example, it takes a certain amount of energy for the human body to maintain itself, move around and do work. There is no way around this because the energy contained in molecules is a factor of chemical laws.

Therefore the idea of a food pill is nonsense. Even if you found a way to compress a day's rations into a pill-sized table, it would still weight the same as a day's rations.


Not entirely true actually, we can, today, pack enough energy and vitamins into a pill and a shake to keep you alive and well. Not to mention that an MRE already gives you more vitamins and calories than a meal you would cook at home.

For other really out there stuff, like FTL travel, you just have to accept that it works as advertised and go from there. We don't need to understand exactly how a ship passes the speed of light, we just need to know how fast, for how long, and with what risks.


40k Calculation and Quantification @ 2011/07/04 15:38:19


Post by: Ruckdog


Canadian 5th wrote:
Kilkrazy wrote:If people are to make any comparison you have to start with the assumption that basic rules of physics, chemistry and mathematics are the same in the SF universes to be examined and the modern day, except where needed to allow science fictiony things such as FTL travel.


Yup, you also need to treat what you see on screen or in text as a real account of what happened unless given reason to do otherwise.


This will be an interesting exercise! I think the calculations will be chiefly interesting from the perspective of showing how crazy the tech shown in 40k is.

However, I should warn you not to get too disappointed if someone refuses to agree with an assertion despite mathematical "proof." The problem is, many assumptions have to be made with regards to missing details, and even relying on "official" sources such as what appears in movies, etc isn't necessarily a sure-fire method thanks to the dramatic license that is often taken in such scenes. I think the issue is compounded in 40k, with its rule of cool and all.


40k Calculation and Quantification @ 2011/07/04 15:40:05


Post by: Canadian 5th


Ruckdog wrote:
Canadian 5th wrote:
Kilkrazy wrote:If people are to make any comparison you have to start with the assumption that basic rules of physics, chemistry and mathematics are the same in the SF universes to be examined and the modern day, except where needed to allow science fictiony things such as FTL travel.


Yup, you also need to treat what you see on screen or in text as a real account of what happened unless given reason to do otherwise.


This will be an interesting exercise! I think the calculations will be chiefly interesting from the perspective of showing how crazy the tech shown in 40k is.

However, I should warn you not to get too disappointed if someone refuses to agree with an assertion despite mathematical "proof." The problem is, many assumptions have to be made with regards to missing details, and even relying on "official" sources such as what appears in movies, etc isn't necessarily a sure-fire method thanks to the dramatic license that is often taken in such scenes. I think the issue is compounded in 40k, with its rule of cool and all.


Dramatic license means nothing when looking at what we actually see. Example: The DS blew up the planet with energy to spare. You can't argue that the movie's designers didn't intend for it to be that powerful and try to low ball it, that's not how this works.


40k Calculation and Quantification @ 2011/07/04 15:43:16


Post by: DeadlySquirrel


Can someone please just close this thread?


40k Calculation and Quantification @ 2011/07/04 15:43:56


Post by: Canadian 5th


DeadlySquirrel wrote:Can someone please just close this thread?


Why, because you don't like it?


40k Calculation and Quantification @ 2011/07/04 15:47:06


Post by: DeadlySquirrel


Canadian 5th wrote:
DeadlySquirrel wrote:Can someone please just close this thread?


Why, because you don't like it?


Hey, whats with the attitude dude? You're just verbally attacking everyone on this thread. Just chill kid. Chill.


40k Calculation and Quantification @ 2011/07/04 15:50:30


Post by: Canadian 5th


DeadlySquirrel wrote:
Canadian 5th wrote:
DeadlySquirrel wrote:Can someone please just close this thread?


Why, because you don't like it?


Hey, whats with the attitude dude? You're just verbally attacking everyone on this thread. Just chill kid. Chill.


You walked into a thread and demanded it be closed without giving so much as a reason. The thread has been mostly civil and given that a mod is participating your input into it staying open or not isn't required. Go post one line spam elsewhere.


40k Calculation and Quantification @ 2011/07/04 16:45:41


Post by: Kilkrazy


Canadian 5th wrote:
Kilkrazy wrote:Yes, and what happens if the description conflicts with reality.

For example, it takes a certain amount of energy for the human body to maintain itself, move around and do work. There is no way around this because the energy contained in molecules is a factor of chemical laws.

Therefore the idea of a food pill is nonsense. Even if you found a way to compress a day's rations into a pill-sized table, it would still weight the same as a day's rations.


Not entirely true actually, we can, today, pack enough energy and vitamins into a pill and a shake to keep you alive and well. Not to mention that an MRE already gives you more vitamins and calories than a meal you would cook at home.

For other really out there stuff, like FTL travel, you just have to accept that it works as advertised and go from there. We don't need to understand exactly how a ship passes the speed of light, we just need to know how fast, for how long, and with what risks.


A pill and a shake, not a pill. If the shake comes dehydrated you need water too. Vitamins in pills don't absorb as well as vitamins taken in food as some of them need cofactors to help the stomach absorb them.

MRE's don't provide a healthy diet, they are intended for short term use only. And they aren't pills, and they weigh about as much as real food.

I already accept the point about FTL so there's no argument there. I'm also prepared to accept arguments about wormholes and other such SF ideas. I'm not prepared to believe that in the year 40,000 it would take less energy to boil water than it does today.




Automatically Appended Next Post:
DeadlySquirrel wrote:Can someone please just close this thread?


Please don't spam threads with pointless posts.

If you don't like the thread, don't read it.

Thank you.


40k Calculation and Quantification @ 2011/07/04 16:47:56


Post by: Canadian 5th


Kilkrazy wrote:
Canadian 5th wrote:
Kilkrazy wrote:Yes, and what happens if the description conflicts with reality.

For example, it takes a certain amount of energy for the human body to maintain itself, move around and do work. There is no way around this because the energy contained in molecules is a factor of chemical laws.

Therefore the idea of a food pill is nonsense. Even if you found a way to compress a day's rations into a pill-sized table, it would still weight the same as a day's rations.


Not entirely true actually, we can, today, pack enough energy and vitamins into a pill and a shake to keep you alive and well. Not to mention that an MRE already gives you more vitamins and calories than a meal you would cook at home.

For other really out there stuff, like FTL travel, you just have to accept that it works as advertised and go from there. We don't need to understand exactly how a ship passes the speed of light, we just need to know how fast, for how long, and with what risks.


A pill and a shake, not a pill. If the shake comes dehydrated you need water too. Vitamins in pills don't absorb as well as vitamins taken in food as some of them need cofactors to help the stomach absorb them.

MRE's don't provide a healthy diet, they are intended for short term use only. And they aren't pills, and they weigh about as much as real food.

I already accept the point about FTL so there's no argument there. I'm also prepared to accept arguments about wormholes and other such SF ideas. I'm not prepared to believe that in the year 40,000 it would take less energy to boil water than it does today.


I didn't ask that you assume anything of the sort, all calculations will assume that basic physics are in place except where the universe specifically violates them. Such as if they made a food pill that weighed nothing and needed no water to work. We would just have to assume they found a way and assume that it works unless the source gives a reason to doubt that it does.


40k Calculation and Quantification @ 2011/07/04 18:45:30


Post by: Kilkrazy


I wouldn't accept that unless it was internally logically consistent.


40k Calculation and Quantification @ 2011/07/04 19:58:58


Post by: Psienesis


Show me an example of weapons power varying by that many orders of magnitude in 40k?


A melta.


40k Calculation and Quantification @ 2011/07/04 20:17:45


Post by: Monster Rain


Psienesis wrote:
Show me an example of weapons power varying by that many orders of magnitude in 40k?


A melta.


Can you elaborate, please?

According to fluff, melta is generally regarded as being rather powerful all the time.


40k Calculation and Quantification @ 2011/07/04 20:26:45


Post by: nosferatu1001


It is vastly more powerful at short range than long


40k Calculation and Quantification @ 2011/07/04 20:29:49


Post by: Monster Rain


I guess I don't equate having an effective range as wildly varying power. By that standard every weapon varies wildly.


40k Calculation and Quantification @ 2011/07/04 20:35:00


Post by: Psienesis


Mainly because while a melta can (and does) turn a battle-tank into a molten pile of slag, it can also, while not missing, fail to kill an infantry unit.

Just one of those oddities of dice-based systems.


40k Calculation and Quantification @ 2011/07/04 20:36:45


Post by: Monster Rain


Ah. I was under the impression that the vagaries of tabletop rules were outside the scope of the discussion.


40k Calculation and Quantification @ 2011/07/04 21:05:46


Post by: Psienesis


Heh, if we cut out all the table-top stuff, we've just removed the "canon" from the WH40K aspect of the equation, since the video games, books, and single movie in the rest of it is... not really canon.


40k Calculation and Quantification @ 2011/07/04 21:12:28


Post by: Ratbarf


Canadian 5th! You're our only hope please for the love of the Nine! Close shut the jaws of Oblivion.


40k Calculation and Quantification @ 2011/07/04 22:00:20


Post by: Emperors Faithful


Canadian 5th wrote:
Emperors Faithful wrote:You ignored this. And you also ignored my comment on the quintillions of droids.


I was talking to like 3 people, I missed it.


No problem.


Emperors Faithful wrote:Enlighten me. Onus is on you here, after all.


You can do some of your own work, it's not on me to do everything here.


How am I supposed to prove a negative? You've put this forward. Now back it up.


So you can cite a source where it says that the asteroid field was unusually active, and that the ships had been out there for days. Becuase right now it looks like these excuses are your own personal speculations.


Most asteroid fields don't contain rocks bashing into each other nor with that level of density. From wikipedia on our own asteroid field:

The remaining bodies range down to the size of a dust particle. The asteroid material is so thinly distributed that multiple unmanned spacecraft have traversed it without incident. Nonetheless, collisions between large asteroids do occur, and these can form an asteroid family whose members have similar orbital characteristics and compositions.

The Hoth field was clearly dense enough that an unmanned probe that is unable to do much course correction would have been destroyed.

On the field's density and activity:

wookiepedia wrote:The Hoth asteroid field, also known as the Anoat Asteroid Belt, was an extensive, wildly erratic asteroid belt occupying the farthest orbit of the Hoth system in the Outer Rim Territories. Forged as the resulting effect of a collision between two rocky planets eons prior to the Galactic Civil War, the belt was a favored sanctuary for smugglers and pirates alike hoping to elude legal authority. The field was rich in untapped mineral resources such as metal ore, a magnet for mining prospectors hoping to make a fortune. The chaotic nature of the asteroid field sent a constant bombardment of meteorites to the surface of Hoth, the system's sixth planet.


So where does wookiepedia get this information from? It's own interpretation of the movies?


On the time spent in the field:

wookiepedia wrote:The Millennium Falcon spent several days hiding within the massive asteroid while Solo and his passengers worked to repair the ship's faulty hyperdrive.[1] Solo cleverly shut down the ship's primary systems in order to avoid detection by the probing Imperial ships the group could hear overhead trying to chase them out. It was while cooped up within the close confines of the Millennium Falcon for several days that the longstanding romantic tensions between Solo and Organa first began to blossom. The princess finally warmed to Solo's roguish charms as they shared one of their first kisses within the deep innards of the asteroid.

However, it was not the might of the Imperial Navy that eventually flushed the Millennium Falcon out of its hiding place. The group soon discovered that mynocks living inside of the cavern had attached themselves to the ship's power cables, leeching the ship of its energy. While clearing the ship of the parasites, Solo and Chewbacca unwittingly discovered the true nature of their hiding spot. Stray blaster bolts fired into the walls of the cave had strangely caused the grotto to shake violently. It was not a simple cave that Solo had hidden his ship in, but the nesting area of a giant exogorth. Solo was able to pilot his ship out of the closing jaws of the massive space slug with only seconds to spare, but at the expense of knowing they would once again be engaged by the Imperial fleet.[2] The existence of an enormous space slug within the asteroid field had been written off as spacer legend until Solo's run-in with the creature. However, some continued to disbelieve the story, based on Solo's reputation for exaggeration.


[1] Galaxy Guide 3: The Empire Strikes Back, Second Edition
[2] Star Wars Episode V


So it was only a few days, not "days at the very least" as you suggested (which implied the time spend there could stretch further into weeks or months).



Yeah, as would most ships in the Imperial Navy with shields down (unless you rolled like an absolute champion on the Critical Damage table).


So the IoM has lost ships to asteroid fields then.


Well, yes. If the ship is travelling through an asteroid field. Without any shields. Whatsoever. How well would an ISD fare if they tried that?

In fact, the larger Imperial Ships (larger than escorts) would still survive such treatment.


Anyway, the Avenger, the ship struck, survived with 'damage' we don't hear how much damage.

wookiepedia wrote:The Avenger was the only ship attached to Death Squadron that managed to stay with the Falcon through the entirety of the asteroid field, earning the warship a reputation for persistence among the Imperial Navy. Needa had sent his Star Destroyer headfirst into the asteroids as Vader had commanded, sustaining substantial damage in the process. It was all his gunnery crews could do to try and keep up with the endless task of trying to shoot down the rocky debris in the Star Destroyer's path. So, when Solo suddenly and unexpectedly banked the Millennium Falcon on an attack course straight for the pursuing Avenger, Needa and his crew were ill-prepared and lost the Rebel ship for good.[1]



[1] Galaxy Guide 3: The Empire Strikes Back, Second Edition


"Substantial damage", so it was hardly a minor scrape. Then again, I can't recall obvious signs of damage from the movie (unless the trail of refuse was actually part-wreckage).


And how does this measure up to Imperial Navy ship's shields just brushing aside asteroids?


Well, a 40 metre wide asteroid such as in the Hoth field striking with a relative speed of between 40m/s and 200m/s would impart an energy of between 0.05 kilotons and 1.2 kilotons. So they clearly weren't the primary threat to the ISD. However the lone ISD that is noted to be damaged was the same ship that was also hit by an ion cannon right before starting the chase. Thus it was likely that it was still recovering from battle damage and that Needa did the same thing as an 40k captain and pushed in with a ship that should have seen a repair dock.

A source for it having been disabled is here:

wookiepedia wrote:The Avenger was later reassigned to Death Squadron and served as the lead attack ship at Hoth. During the course of the battle, the Avenger was disabled. [3]


[3]A Guide to the Star Wars Universe, Third Edition

We know that damage from such weapons can be repaired, but we don't know to what extent they had time to fix things before taking multiple asteroid impacts. Also, being forced to fire her weapons for days on end to keep asteroids away would have placed a strain on the ships power systems, so that is another factor. A damaged ship was forced right into a hostile situation where it was fighting for days without proper repair and refit. Thus it's not really the best representation of how much punishment a ship can take.


You still haven't answered my point, we know that the Avenger had suffered damage beforehand, but how does this compare to Imperial Navy shields simply brushing asteroids aside in all cases? Here we have an ISD with weakened shields suffering damage, but even the weakest Imperial Ship has shields capable of ignoring such detrius. Only when their shields are down completely do Imperial Navy ships run the risk of damage. If anything an Imperial Navy shield looks to be a lot better, since their shields recharge rapidly if one or two are knocked down.



"Now would we see ship capable..."?

I'm not saying an ISD couldn't go toe-to-toe with a Cobra Class Escort (in fact it would probably come off better as energy weapons have greater accuracy than ordnance). All I've done is show how you can compare the difference in shield strength.


You're going to need to show that bigger equals more powerful if you think the best an ISD can take is a Cobra.


Well that's relatively easy. If the shield on a Cobra Sword Class Frigate is capable of roughly the same protection, if not better, as an ISD, then a larger Imperial Navy ship, with shields usually quadruple the strength of a Sword Class Firgate would fare a lot better.

On reflection, a Sword or Firestorm Class Frigate is a better example, seeing as I can't recall the specifics of cobra class escorts.


Firstly, what more can I do? What I've told you is simply from the BFG rules for moving through Asteroid fields. If you don't believe me, GW still has the BFG rules sheet on it's website I think, and you can check for yourself.


Great, and in Star Wars games a lone fighter beats an ISD and Marines can be killed by a lone grot at least some of the time. Game mechanics aren't evidence for a debate or I could prove that any Star Wars fighter can bring down a ship many times larger than itself, that people in the Star Wars universe can heal by picking up health kits, and that no matter how many weapons you carry you never get encumbered. I could also show that lascannons have a range of under a hundred meters.

I bet you dislike your own rules now don't you?


Seeing as two out of three of the original Star Wars movies involve fighters destroying Super Weapons, isn't this pot calling kettle black?

And yes, a grot can kill a space marine. It's extremely unlikely, but still plausible. Why wouldn't it be?
Furthermore, I think game mechanics can be used to some extent. For example, we can use game mechanics to show that flak armour doesn't offer any real protection from bolter rounds, while carapace armour does. When it comes to range though you can dismiss ridiculous things, like how 38 millenia now the range of all weapons is less than a stones throw, becuase it contradicts other sources that offer a more logical explanation.

Asking you to do your own work is being a dick?


No, but failing to be civil about it usually is.

Okay, there's obviously some official high-end source that not only says that the Space Battles in the Clone Wars Cartoons and movies (I can't recall anywhere where it said that they were engaging underneath the planetary shields) are incorrect, but it replaces these incorrect sources with a definite example that SW naval engagements ussually occur hundreds thousands of kilometres apart. I'd still like to see it.


Why would sources list effective range for a ship as being 10 light minutes if it was never used? I'll need to dosome poking to find exact examples for longer range engagements, but they certainly do exist.


What exactly would a weapon with 10 light minutes range be shooting at?

But yes, a source that shows that such range is standard, rather than the exception, would be useful.


40k Calculation and Quantification @ 2011/07/05 01:02:20


Post by: Canadian 5th


Psienesis wrote:Heh, if we cut out all the table-top stuff, we've just removed the "canon" from the WH40K aspect of the equation, since the video games, books, and single movie in the rest of it is... not really canon.


Not really, the tabletop isn't accurate to the way the game is shown in every other source for 40k information including the non-gameplay related sections of every codex. The novels and codex's are more alike to each other than things on the table top are. Unless you're trying to say that a space marine can't rapid fire a bolter further than the length of a baneblade, or fire accurately past that same distance if he's moved. It's for this reason, reasons of scale often being off, ie. compare the height of marine to a guardsman, compare the size of some vehicles to the passengers they claim to carry.

How am I supposed to prove a negative? You've put this forward. Now back it up.


I didn't actually ask you to prove a negative. You asked me to provide a slew of numbers for 40k. I'm asking you to find a specific thing and we can try to work through how to do the math for it.


So it was only a few days, not "days at the very least" as you suggested (which implied the time spend there could stretch further into weeks or months).


It was at least days, days being anything over a single day. If it was more than 7 days I would have said a week at least, more than 14 days I would have said weeks, and more than a month a month at least, and so on.

Well, yes. If the ship is travelling through an asteroid field. Without any shields. Whatsoever. How well would an ISD fare if they tried that?

In fact, the larger Imperial Ships (larger than escorts) would still survive such treatment.


We've seen them do it with at the least much reduced shields and it was at best damaged. That would likely be akin to taking a few of the more minor critical hits in BFG.


"Substantial damage", so it was hardly a minor scrape. Then again, I can't recall obvious signs of damage from the movie (unless the trail of refuse was actually part-wreckage).


Substantial can actually be used a few ways, if you're not used to fighting your definition of substantial is going to be lower than a UFC fighter for example. Thus the damage likely was substantial, at least for what they expected from asteroids. Thinks like gun barrels likely needed changing and they were still suffering from that ion cannon earlier.

You still haven't answered my point, we know that the Avenger had suffered damage beforehand, but how does this compare to Imperial Navy shields simply brushing asteroids aside in all cases? Here we have an ISD with weakened shields suffering damage, but even the weakest Imperial Ship has shields capable of ignoring such detrius. Only when their shields are down completely do Imperial Navy ships run the risk of damage. If anything an Imperial Navy shield looks to be a lot better, since their shields recharge rapidly if one or two are knocked down.


Well, both universes would have their ships would shrug of asteroids with ease if they were in good shape and become damage if they weren't. 40k ships tend to have a heavy prow so that may help them in that regard, but the spires and other smaller sections of the ship may also be in danger from hits if the shields drop. Especially those large open stained glass chapel windows. Over all though, I think we should expect both sides to come through okay with shields up or down as their hulls are designed to take larger than kiloton impacts.

On shielding coming back, that's hard to say. We know that void shields do tend to get knocked out and come back quickly. We also know that Star Wars shields do the same and that projectors can shift focus to cover fallen sections and ships roll to expose fresh sections while weakened ones recharge. In this case I don't think it was that the shields were knocked out, it's that there was significant damage down to the main power grid of the Avenger and that was hampering them.



Well that's relatively easy. If the shield on a Cobra Sword Class Frigate is capable of roughly the same protection, if not better, as an ISD, then a larger Imperial Navy ship, with shields usually quadruple the strength of a Sword Class Firgate would fare a lot better.

On reflection, a Sword or Firestorm Class Frigate is a better example, seeing as I can't recall the specifics of cobra class escorts.


Asteroids are the lowest end things we ever see hit an ISD, so shrugging them off isn't exactly impressive. Even the falcon took a few hits it couldn't evade in the field and took several hist from TIE's in the previous movie. We know that fighters have low kilotons to tens of kilotons of laser power so that's rather impressive. We also know that it can't take many though, and that she wasn't in peak shape at Hoth.


Seeing as two out of three of the original Star Wars movies involve fighters destroying Super Weapons, isn't this pot calling kettle black?

And yes, a grot can kill a space marine. It's extremely unlikely, but still plausible. Why wouldn't it be?
Furthermore, I think game mechanics can be used to some extent. For example, we can use game mechanics to show that flak armour doesn't offer any real protection from bolter rounds, while carapace armour does. When it comes to range though you can dismiss ridiculous things, like how 38 millenia now the range of all weapons is less than a stones throw, becuase it contradicts other sources that offer a more logical explanation.


That involved fighters killing a ship that had a weakness to their main weapons and a crew that didn't want to send fighters out. Even so it took a Jedi to make the shot and had he failed they would have been done for. Few others in that or any other galaxy could make the shot and even less have technology able to follow his guidance while being small enough to go down the shaft.

Things like an ISD don't have these glaring flaws and thus should hold up better, especially because unlike the Death Star they're shields weren't the weakest thing about them.

Flak armor will tend to not stop a bolter round in the books as well.

What exactly would a weapon with 10 light minutes range be shooting at?

But yes, a source that shows that such range is standard, rather than the exception, would be useful.


Space stations, cities on a planet, ships in a known orbit and the like. It won't be much use against anything maneuvering, but it does show that they have exceptionally fine turret control to even make such a shot.

I'm still trying to find data on star ship combat, it's not one of the more commonly cited things so it's taking time.


40k Calculation and Quantification @ 2011/07/05 01:52:15


Post by: Psienesis



Not really, the tabletop isn't accurate to the way the game is shown in every other source for 40k information including the non-gameplay related sections of every codex. The novels and codex's are more alike to each other than things on the table top are. Unless you're trying to say that a space marine can't rapid fire a bolter further than the length of a baneblade, or fire accurately past that same distance if he's moved. It's for this reason, reasons of scale often being off, ie. compare the height of marine to a guardsman, compare the size of some vehicles to the passengers they claim to carry


The fluff isn't internally consistent, however, which is where the problems arise, because it runs counter to other fluff, and sometimes runs counter to fluff from the very same author.

One case in point... in the few places where Eisenhorn meets a Space Marine (or a Chaos Space Marine), Abnett goes to great pains to describe the Marine's size, mentioning at one point, "that the finger was the size and shape of an Arbite's truncheon was utterly besides the point."

One of these very same Marines later gives Eisenhorn his boltpistol, which the Inquisitor then carries for many years until its loss pursuing an alpha-class renegade psyker and an unfettered daemonhost. Eisenhorn, though tall, is not Astartes-sized, by any stretch of the imagination... and, yet, uses this pistol on several occasions, even though it should not, by any means, fit in his hand.

Given that the fluff is open to artistic license and interpretation, we're left with the table-top game as the only GW-codified source of information... and then, of course, we run into the problem that its written for a specific format of wargame, and not a representation of reality.


40k Calculation and Quantification @ 2011/07/05 02:08:56


Post by: Canadian 5th


Psienesis wrote:

Not really, the tabletop isn't accurate to the way the game is shown in every other source for 40k information including the non-gameplay related sections of every codex. The novels and codex's are more alike to each other than things on the table top are. Unless you're trying to say that a space marine can't rapid fire a bolter further than the length of a baneblade, or fire accurately past that same distance if he's moved. It's for this reason, reasons of scale often being off, ie. compare the height of marine to a guardsman, compare the size of some vehicles to the passengers they claim to carry


The fluff isn't internally consistent, however, which is where the problems arise, because it runs counter to other fluff, and sometimes runs counter to fluff from the very same author.

One case in point... in the few places where Eisenhorn meets a Space Marine (or a Chaos Space Marine), Abnett goes to great pains to describe the Marine's size, mentioning at one point, "that the finger was the size and shape of an Arbite's truncheon was utterly besides the point."

One of these very same Marines later gives Eisenhorn his boltpistol, which the Inquisitor then carries for many years until its loss pursuing an alpha-class renegade psyker and an unfettered daemonhost. Eisenhorn, though tall, is not Astartes-sized, by any stretch of the imagination... and, yet, uses this pistol on several occasions, even though it should not, by any means, fit in his hand.

Given that the fluff is open to artistic license and interpretation, we're left with the table-top game as the only GW-codified source of information... and then, of course, we run into the problem that its written for a specific format of wargame, and not a representation of reality.


So descriptive hyperbole is never allowed now? Abnett shows that marines are larger than other men and makes sure that we know that Eisenhorn sees them as these hulking things. The description of their size tends to fall towards the high end of what is normal for a 40k human, but they are, outside of rare cases, still only roughly the same size as a man like Bragg. We also know that men have used marine bolt pistols and that marines have used things as small as guardsman lasguns before so the vast majority of our information shows that while marines are large, they aren't as large as described in that particular scene.


40k Calculation and Quantification @ 2011/07/05 02:50:51


Post by: Psienesis


Unless something has changed recently, an unarmored Space Marine is nine feet tall. This is, in every sense, super-human.

Bragg is big... but he's not Space Marine big. Eisenhorn is six-feet-plus... but that's not Space Marine big.


40k Calculation and Quantification @ 2011/07/05 03:27:46


Post by: Canadian 5th


Psienesis wrote:Unless something has changed recently, an unarmored Space Marine is nine feet tall. This is, in every sense, super-human.

Bragg is big... but he's not Space Marine big. Eisenhorn is six-feet-plus... but that's not Space Marine big.


Actually it's not uncommon for regular feral world humans to reach huge sizes and many people in 40k are 2 or more meters tall. Bragg was himself 8 feet tall and hardly abnormal. Also being 9 feet tall won't make your fingers hugely thicker than normal so your point is still a poor one.


40k Calculation and Quantification @ 2011/07/05 07:06:40


Post by: Grey Templar


Space Marines are described as having different proportions from a human. this includes a broader chest, a square set face, and larger thicker boned hands.


as for Calculations,

In BFG, a single Lance or Weapon battery hit is capable of completely annhilating a Escort sized vessel. roughly the same tonnage and size of a Star Destroyer.

a single lance hit actually represents a single energy beam. I assume a weapon battery would actually represent several dozen Plasma and solid slug rounds fired together in a single salvo.

I don't know what math can be reverse engineered from that, but there it is.



distance comparason:

Here is some math i can do.

an Earth sized planet in BFG is 15cm accross or around 6" and this actually represents not only the planet, but also "near orbit" which I would asssume to be several thousand kilometers above the suface.

a Teliport attacks range in BFG is 10cm.

diameter of the earth is 12,713.6 kilometers. add in 6000 kilometers to account for the near-orbit distance and we have 18,713.6 kilometers=15cm.


this gives us a range for Teliport attacks to be 12,475.73 kilometers.


so a single cm is equal to 1,247.57 kilometers.


a typical Imperial Warships weapon range is 45cm, so around 56,140.8 km.

from BL books, I belive it doesn't take more then a few seconds for weapons fire to cross these distances. assuming 3 seconds for contact with the target, that gives an estimated weapons velocity of 18,713.6 km/sec.

if we assume a Landraider sized projectile(as is said to be an example) made out of 260 cubic meters of Uranium(a dense material suitable for an armor piercing warhead)

this gives us a weight of 496.6 kilograms.

(1/2)496.6 Kilograms times 18,713.6 km/sec squared gives us a kinetic energy value of 8.9654x10^10 joules.

that gives us 86,954,368.25 KJ of force for a single slug fired in their hundreds by IoM ships.


40k Calculation and Quantification @ 2011/07/05 07:49:51


Post by: Canadian 5th


Grey Templar wrote:Space Marines are described as having different proportions from a human. this includes a broader chest, a square set face, and larger thicker boned hands.


That makes sense, it would also just mean that the grip might a bit awkward for a normal human.

In BFG, a single Lance or Weapon battery hit is capable of completely annhilating a Escort sized vessel. roughly the same tonnage and size of a Star Destroyer.

a single lance hit actually represents a single energy beam. I assume a weapon battery would actually represent several dozen Plasma and solid slug rounds fired together in a single salvo.

I don't know what math can be reverse engineered from that, but there it is.


You generally want to run the numbers from the beam hitting an inert object, thankfully we can get a rough estimate of firepower for Caves of Ice giving which sets the power output for a broadside at high single to low double digit petatons. So it certainly won't be one hitting a Star Destroyer, though if the entire broadside lands it could start getting concerning. For comparison an Imperial-class Star Destroyer is able to unleash roughly 2 teratons per barrel per second, broadside that means roughly two petatons a second, if they point forward and tilt the nose down that ends up being around four petatons a second. This means that while the lances have a higher output per shot, their slower refire rate makes the battleships from Caves of Ice an equal match for an ISD, though you should note that they are also larger owning to tougher, but often bulkier technology in 40k.

Here is some math i can do.

<snip>


That math fits with a ship's base, 60mm, being thousands of kilometers across.

from BL books, I belive it doesn't take more then a few seconds for weapons fire to cross these distances. assuming 3 seconds for contact with the target, that gives an estimated weapons velocity of 18,713.6 km/sec.

if we assume a Landraider sized projectile(as is said to be an example) made out of 260 cubic meters of Uranium(a dense material suitable for an armor piercing warhead)

this gives us a weight of 496.6 kilograms.

(1/2)496.6 Kilograms times 18,713.6 km/sec squared gives us a kinetic energy value of 8.9654x10^10 joules.

that gives us 86,954,368.25 KJ of force for a single slug fired in their hundreds by IoM ships.


Your math is off, you punched in kilograms and meters per second, when you surely meant tons and forgot to use kilometers per second. That punches the numbers up from sub kiloton to 2 gigatons. Not bad for a lower end weapon.

Note you can use[url=http://www.stardestroyer.net/Empire/Science/Relativity.html]this[/url in the future.

Thankfully, we know they have gigaton scale torpedoes (largest size), and petaton scale lances (again for larger ships), things like the nova cannons would also appear to be in the petaton range though with a higher per shot output and lower refire rates.


40k Calculation and Quantification @ 2011/07/05 07:57:32


Post by: nosferatu1001


Canadian - from memory BFG tells you to ignore the ships base, and its pposition, when trying to work out scale. The ship is in fact the very centre, an almost invisible point.

Finally - the trouble with applying real physics to 40k is that the ships have an output of roughly 3/4 solar output, when you combine shields and lances / etc, despite using fusion power (many times plasma == fusion in canon, and was repeated very recently in a BL novel) and only having 0.01% solar mass. In other words, the figures you end up calculating for 40k show their ships cannot work....


40k Calculation and Quantification @ 2011/07/05 08:03:26


Post by: Canadian 5th


You recall at least part of it right. The stem is the ship, the base is the close are around it where mines and the like are a danger.

On power generation, it's obvious they use something else and just call it fusion. Or they draw extra power from the warp.


40k Calculation and Quantification @ 2011/07/05 08:06:11


Post by: nosferatu1001


Never seen any indication that they draw power from the warp - the only non-daemonic (at least, if you ignore the GK FAQ....) entities that regularly that are"imperium" and do so are Obliterators....

From descriptions of plasma vessels rupturing its also very 1980s ideas on fusion as well, e.g. marine backpacks al the way to ship sized generators.


40k Calculation and Quantification @ 2011/07/05 09:15:34


Post by: Canadian 5th


nosferatu1001 wrote:Never seen any indication that they draw power from the warp - the only non-daemonic (at least, if you ignore the GK FAQ....) entities that regularly that are"imperium" and do so are Obliterators....

From descriptions of plasma vessels rupturing its also very 1980s ideas on fusion as well, e.g. marine backpacks al the way to ship sized generators.


Indeed, it should present a problem, but they have more than one way around it such as storing fuel in the warp and letting it slip in, meaning that they don't waste space on anything that isn't making power. If they were also closer to 100% efficient than a real star it would help a lot as well. They could also store power in batteries when they aren't in power. Meaning they are powerful in battle, but can take a long while to recharge. It would mean the long travel times actually help them be ready to fight when they get there.


40k Calculation and Quantification @ 2011/07/05 09:21:55


Post by: Toastedandy


How would you calculate the stopping power of a bolter?
Only references I know from the top of my head, are that they would blow a hole the size of a fist into a chest, or even rockcrete wall, but they have small explosives inside the bullets.

Also, the power levels of a plasma pistol, and why it doesn't get stronger as it gets bigger, the blast only gets bigger.


40k Calculation and Quantification @ 2011/07/05 09:27:49


Post by: Canadian 5th


Toastedandy wrote:How would you calculate the stopping power of a bolter?
Only references I know from the top of my head, are that they would blow a hole the size of a fist into a chest, or even rockcrete wall, but they have small explosives inside the bullets.

Also, the power levels of a plasma pistol, and why it doesn't get stronger as it gets bigger, the blast only gets bigger.


Bolters have a firepower power that is shockingly close to a modern hand grenade. I've done the math before, but will need to dig it up. Connor has done his own math in the thread I linked to back on page 1.

As for the plasma weapons, first the very idea is dumb. Plasma is to air as steam is to water; how afraid would you be of a steam gun? That said they use some containment system to bind the plasma, the larger the containment the bigger the area covered, but if it's all the same temperature then you do little extra damage.


40k Calculation and Quantification @ 2011/07/05 09:30:03


Post by: Toastedandy


Canadian 5th wrote:
Bolters have a firepower power that is shockingly close to a modern hand grenade. I've done the math before, but will need to dig it up. Connor has done his own math in the thread I linked to back on page 1.


I would prefer to know how to get the result, rather than just an answer.


40k Calculation and Quantification @ 2011/07/05 09:30:45


Post by: Corrode


Are we actually trying to apply maths to 40k fluff? This is a thing?

God help us all.


40k Calculation and Quantification @ 2011/07/05 09:33:59


Post by: Canadian 5th


Toastedandy wrote:
Canadian 5th wrote:
Bolters have a firepower power that is shockingly close to a modern hand grenade. I've done the math before, but will need to dig it up. Connor has done his own math in the thread I linked to back on page 1.


I would prefer to know how to get the result, rather than just an answer.


Well the way I used was to look at the bolter round, figure out how large it was and, by diagrams, how much explosive you could put in the shell. Then you look at the fact that 40k explosives put ours to shame and say double the power of our best stuff. That's one way, and the results seem to fit what we see. The other way is to base it off injury inflicted, that's much harder and less accurate in many cases.


Automatically Appended Next Post:
Corrode wrote:Are we actually trying to apply maths to 40k fluff? This is a thing?

God help us all.


If you don't like it don't post. Keep the spam out of my thread.


40k Calculation and Quantification @ 2011/07/05 09:38:25


Post by: Corrode


It's very nice that you've looked at diagrams and all those other things but you've missed the fundamental point that they're all made up by people who have the barest idea of how any of this gear would function and in a lot of cases have just plain old made it up or even changed it between descriptions. This is one of those weird Star Wars Aspergers things except that in Star Wars the team went and produced a bunch of as-realistic-as-we-can-get stuff to help out.


40k Calculation and Quantification @ 2011/07/05 09:40:20


Post by: Canadian 5th


Corrode wrote:It's very nice that you've looked at diagrams and all those other things but you've missed the fundamental point that they're all made up by people who have the barest idea of how any of this gear would function and in a lot of cases have just plain old made it up or even changed it between descriptions. This is one of those weird Star Wars Aspergers things except that in Star Wars the team went and produced a bunch of as-realistic-as-we-can-get stuff to help out.


I'm showing that you can do the math and that changes can be explained if you care enough to do the work. Now kindly leave out the disparaging remarks and leave this thread.


40k Calculation and Quantification @ 2011/07/05 09:44:21


Post by: Toastedandy


I have to say Corrode is right. The math can only go so far, and at the end of the day, it would be far from accurate as everything is made based on the rule of cool.
But I have to say, it would be interesting to seem the limitations of certain weapons, and how effective the weapons would be if they were real.


40k Calculation and Quantification @ 2011/07/05 09:47:13


Post by: Canadian 5th


Toastedandy wrote:I have to say Corrode is right. The math can only go so far, and at the end of the day, it would be far from accurate as everything is made based on the rule of cool.
But I have to say, it would be interesting to seem the limitations of certain weapons, and how effective the weapons would be if they were real.


Of course the numbers won't be terribly accurate, we're working with second hand evidence at best and working from what they have done rather than their real specs. The best we can get is to within an order of magnitude, which tells you some basic things about the weapons and it's role and how it stacks versus what we have. However, even rule of cool can be calculated and I, among others, am attempting to do so.


40k Calculation and Quantification @ 2011/07/05 10:18:52


Post by: Toastedandy


But you would come up with glaring irregularities. Like a guardsmen not being wounded by a melta shot. What equation would you use to calculate the max effective range of a bolter? I have'nt done any real math for about 4 years.


40k Calculation and Quantification @ 2011/07/05 10:21:07


Post by: Canadian 5th


Toastedandy wrote:But you would come up with glaring irregularities. Like a guardsmen not being wounded by a melta shot. What equation would you use to calculate the max effective range of a bolter? I have'nt done any real math for about 4 years.


You don't see meltas failing to kill stuff much in the fluff, and the game on the table top isn't something you can work from. As for range, that's tough, I'm sure some books make mention of it though.


40k Calculation and Quantification @ 2011/07/05 10:53:31


Post by: Toastedandy


But the problem is, that because of lack of fluff on the details of all the weapons, the only way we can get any reference figures, is from the tabletop. But as we all know, the tabletop is out of proportion, you can see this from the size of marines, guardsmen and even the tanks.


40k Calculation and Quantification @ 2011/07/05 11:11:18


Post by: Brother Coa




You can't put math and laws of physic in a universe that has very little to none of both. You may know math, but GW writers don't.

For example: give me a number of Guardsman on active duty all across the Imperium.
Or a possibility that you will see even one Space Marine in your life.
Better yet: give me the exact population number of Orks in the galaxy...

On further notice, one guy take math and he find out that output power of Lasgun shot is 1.21 GW. And we are talking about math and 40k?






Automatically Appended Next Post:
Canadian 5th wrote:
Given the attitude on this board towards actually doing math and, heck, even typing in proper English I took your first post as more of the same ignorant and tiresome attitude.


And what is your problem with countries that doesn't have Engish as their first language? People are at least trying...
You are not one of those guys who thinks that North America is the whole world?


40k Calculation and Quantification @ 2011/07/05 11:25:22


Post by: Canadian 5th


Toastedandy wrote:But the problem is, that because of lack of fluff on the details of all the weapons, the only way we can get any reference figures, is from the tabletop. But as we all know, the tabletop is out of proportion, you can see this from the size of marines, guardsmen and even the tanks.


Not really, you get data from the books and the descriptions there. The table top is an abstraction of what happens in the fluff.


Automatically Appended Next Post:
Brother Coa wrote:You can't put math and laws of physic in a universe that has very little to none of both. You may know math, but GW writers don't.

For example: give me a number of Guardsman on active duty all across the Imperium.
Or a possibility that you will see even one Space Marine in your life.
Better yet: give me the exact population number of Orks in the galaxy...

On further notice, one guy take math and he find out that output power of Lasgun shot is 1.21 GW. And we are talking about math and 40k?


Gravity is still the same, water still boils the same, people are made of more or less the same stuff. The only laws of physics that we can assume change are the ones we see directly.

Why are you hung up on exact numbers that we won't find. This thread is about doing the best we can with what we're give, so I can say that most worlds have a PDF and contribute to the guard in some way, we get exact numbers for some conflicts and less data on others.

And what is your problem with countries that doesn't have Engish as their first language? People are at least trying...
You are not one of those guys who thinks that North America is the whole world?


Americans and Brits are as bad as anybody at times.


40k Calculation and Quantification @ 2011/07/05 11:31:29


Post by: Emperors Faithful


Canadian 5th wrote:
Psienesis wrote:Heh, if we cut out all the table-top stuff, we've just removed the "canon" from the WH40K aspect of the equation, since the video games, books, and single movie in the rest of it is... not really canon.


Not really, the tabletop isn't accurate to the way the game is shown in every other source for 40k information including the non-gameplay related sections of every codex. The novels and codex's are more alike to each other than things on the table top are. Unless you're trying to say that a space marine can't rapid fire a bolter further than the length of a baneblade, or fire accurately past that same distance if he's moved. It's for this reason, reasons of scale often being off, ie. compare the height of marine to a guardsman, compare the size of some vehicles to the passengers they claim to carry.

How am I supposed to prove a negative? You've put this forward. Now back it up.


I didn't actually ask you to prove a negative. You asked me to provide a slew of numbers for 40k. I'm asking you to find a specific thing and we can try to work through how to do the math for it.


No, what I've said, and what other people here are saying, is that you can't do such a thing for 40k. You've said you can, so by all means go for it.



So it was only a few days, not "days at the very least" as you suggested (which implied the time spend there could stretch further into weeks or months).


It was at least days, days being anything over a single day. If it was more than 7 days I would have said a week at least, more than 14 days I would have said weeks, and more than a month a month at least, and so on.


But you implied that 'days' (numbering between 1-7) was the very minimum by adding 'at least'. It's okay, it's just a little thing, so the adult thing would be to fess up and say you were incorrect in making such an implication.


Well, yes. If the ship is travelling through an asteroid field. Without any shields. Whatsoever. How well would an ISD fare if they tried that?

In fact, the larger Imperial Ships (larger than escorts) would still survive such treatment.


We've seen them do it with at the least much reduced shields and it was at best damaged. That would likely be akin to taking a few of the more minor critical hits in BFG.


The point still stands that the Imperial Navy shields operate just as well, if not better, than ISD's travelling through asteroid fields.


"Substantial damage", so it was hardly a minor scrape. Then again, I can't recall obvious signs of damage from the movie (unless the trail of refuse was actually part-wreckage).


Substantial can actually be used a few ways, if you're not used to fighting your definition of substantial is going to be lower than a UFC fighter for example. Thus the damage likely was substantial, at least for what they expected from asteroids. Thinks like gun barrels likely needed changing and they were still suffering from that ion cannon earlier.


There's not really much to go on here, it could mean anything from a sevre hull breach to a slightly erratic communications array.


You still haven't answered my point, we know that the Avenger had suffered damage beforehand, but how does this compare to Imperial Navy shields simply brushing asteroids aside in all cases? Here we have an ISD with weakened shields suffering damage, but even the weakest Imperial Ship has shields capable of ignoring such detrius. Only when their shields are down completely do Imperial Navy ships run the risk of damage. If anything an Imperial Navy shield looks to be a lot better, since their shields recharge rapidly if one or two are knocked down.


Well, both universes would have their ships would shrug of asteroids with ease if they were in good shape and become damage if they weren't. 40k ships tend to have a heavy prow so that may help them in that regard, but the spires and other smaller sections of the ship may also be in danger from hits if the shields drop. Especially those large open stained glass chapel windows. Over all though, I think we should expect both sides to come through okay with shields up or down as their hulls are designed to take larger than kiloton impacts.


Holy hell, did you just agree with me?


On shielding coming back, that's hard to say. We know that void shields do tend to get knocked out and come back quickly. We also know that Star Wars shields do the same and that projectors can shift focus to cover fallen sections and ships roll to expose fresh sections while weakened ones recharge. In this case I don't think it was that the shields were knocked out, it's that there was significant damage down to the main power grid of the Avenger and that was hampering them.


A crippled Imperial Cruiser would still have void shields, albiet weakened, unless the actual void shield generator itself recieved damage (while the ship was unshielded). This weakened shield would still brush aside asteroids with ease.

Well that's relatively easy. If the shield on a Cobra Sword Class Frigate is capable of roughly the same protection, if not better, as an ISD, then a larger Imperial Navy ship, with shields usually quadruple the strength of a Sword Class Firgate would fare a lot better.

On reflection, a Sword or Firestorm Class Frigate is a better example, seeing as I can't recall the specifics of cobra class escorts.


Asteroids are the lowest end things we ever see hit an ISD, so shrugging them off isn't exactly impressive. Even the falcon took a few hits it couldn't evade in the field and took several hist from TIE's in the previous movie. We know that fighters have low kilotons to tens of kilotons of laser power so that's rather impressive. We also know that it can't take many though, and that she wasn't in peak shape at Hoth.


Fighters do what now?


Seeing as two out of three of the original Star Wars movies involve fighters destroying Super Weapons, isn't this pot calling kettle black?

And yes, a grot can kill a space marine. It's extremely unlikely, but still plausible. Why wouldn't it be?
Furthermore, I think game mechanics can be used to some extent. For example, we can use game mechanics to show that flak armour doesn't offer any real protection from bolter rounds, while carapace armour does. When it comes to range though you can dismiss ridiculous things, like how 38 millenia now the range of all weapons is less than a stones throw, becuase it contradicts other sources that offer a more logical explanation.


That involved fighters killing a ship that had a weakness to their main weapons and a crew that didn't want to send fighters out. Even so it took a Jedi to make the shot and had he failed they would have been done for. Few others in that or any other galaxy could make the shot and even less have technology able to follow his guidance while being small enough to go down the shaft.


He wasn't a Jedi (even an apprentice) during the attack, but he was Force Sensitive. Still, it's an example of a fighter killing a Superweapon. As unlikely and impossible as it would initially seem, someone did it (twice).

Things like an ISD don't have these glaring flaws and thus should hold up better, especially because unlike the Death Star they're shields weren't the weakest thing about them.


It has always struck me as rather hilarious that ISD seem impervious to fighters, but the bigger fellas (such as the SSD) can't handle them.


Flak armor will tend to not stop a bolter round in the books as well.


Yep, and where fluff and tabletop agree, we can see that the tabletop is reliable in that regard.


What exactly would a weapon with 10 light minutes range be shooting at?

But yes, a source that shows that such range is standard, rather than the exception, would be useful.


Space stations, cities on a planet, ships in a known orbit and the like. It won't be much use against anything maneuvering, but it does show that they have exceptionally fine turret control to even make such a shot.


It still seems extreme. You could be a tenth of that range and likely far outside the range of more common Space armanents.

I'm still trying to find data on star ship combat, it's not one of the more commonly cited things so it's taking time.


...er, Good luck?


40k Calculation and Quantification @ 2011/07/05 11:44:24


Post by: Toastedandy


Canadian 5th wrote:
Toastedandy wrote:But the problem is, that because of lack of fluff on the details of all the weapons, the only way we can get any reference figures, is from the tabletop. But as we all know, the tabletop is out of proportion, you can see this from the size of marines, guardsmen and even the tanks.


Not really, you get data from the books and the descriptions there. The table top is an abstraction of what happens in the fluff.


But there is little or no data in the books. All of it is subjective, it will vary from author to author and even in each edition.


Canadian 5th wrote:
And what is your problem with countries that doesn't have Engish as their first language? People are at least trying...
You are not one of those guys who thinks that North America is the whole world?


Americans and Brits are as bad as anybody at times.


His first language isn't English, that is the point he is making. You keep telling him in a condescending manner that his English isn't up to scratch. I can understand him perfectly well, sure there will be grammar mistakes, but he has excellent English.


40k Calculation and Quantification @ 2011/07/05 11:58:42


Post by: Canadian 5th


Emperors Faithful wrote:No, what I've said, and what other people here are saying, is that you can't do such a thing for 40k. You've said you can, so by all means go for it.


Have I not been doing so?

But you implied that 'days' (numbering between 1-7) was the very minimum by adding 'at least'. It's okay, it's just a little thing, so the adult thing would be to fess up and say you were incorrect in making such an implication.


Yes, because I knew that it was a few days at least. Hence at least, it was never my intention to make it seem longer than it was.

The point still stands that the Imperial Navy shields operate just as well, if not better, than ISD's travelling through asteroid fields.


They operate at roughly the same level against the impacts. However those impacts are far less energetic than weapons fire so it shouldn't surprise anybody.


There's not really much to go on here, it could mean anything from a sevre hull breach to a slightly erratic communications array.


Indeed, and that's one of the tough parts of doing this.

Holy hell, did you just agree with me?


This thread I've simply been trying to answer questions, this is a learning thread. Not any sort of debate.

A crippled Imperial Cruiser would still have void shields, albiet weakened, unless the actual void shield generator itself recieved damage (while the ship was unshielded). This weakened shield would still brush aside asteroids with ease.


That's hard to say. Given that we don't see much damage to the Avenger it's really hard to say how it did compared to a 40k vessel suffering in a similar way. We simply don't have enough data at this time.

Fighters do what now?


The lasers on a fighter have been calculated to output kilotons of energy per shot from a few sources.


He wasn't a Jedi (even an apprentice) during the attack, but he was Force Sensitive. Still, it's an example of a fighter killing a Superweapon. As unlikely and impossible as it would initially seem, someone did it (twice).


The first time was luck, and the second time was bad planning due to the Emperor having tunnel vision. It's unlikely he sets the same type of trap for another person besides Luke.

It has always struck me as rather hilarious that ISD seem impervious to fighters, but the bigger fellas (such as the SSD) can't handle them.


Actually, the Executor wasn't downed just by a fighter. It was attacked by the entire rebel fleet and they managed to down the shields. You can see part of what was going on in the movie, they say that shields are down and to intensify point defense fire in the area lest something slip through. It just so happens that a quick and nimble A-Wing dodged most of the flak and happened to crash into the unshielded bridge before they could either cover it with another section of shield, or bring the section back online. You can find more details in the novelization of the movie.


Yep, and where fluff and tabletop agree, we can see that the tabletop is reliable in that regard.


Yes, the table top can agree with the fluff at times, at others not so much. Given that the fluff gives more to work with it's best to stick with that approach and explain away differences on the table as an abstraction. Much like Chess and Go are abstractions of warfare.


It still seems extreme. You could be a tenth of that range and likely far outside the range of more common Space armanents.


Indeed, meaning that this ship might be able to bombard from outside the range where other ships simply can't see or aim at them well enough to return fire. Rather useful if you ask me.

...er, Good luck?


Thanks, believe it or not I don't have any Star Wars books currently. So I'll have to borrow them or see if I can find them in the bargain section sometime. When do I'll PM you with what I find.


Automatically Appended Next Post:
Toastedandy wrote:But there is little or no data in the books. All of it is subjective, it will vary from author to author and even in each edition.


That is less true than you may think. Sure some details change, but it's easy to say that the book takes place somewhere with slightly different gear. The IoM isn't exactly one uniform whole so that tends to help. Also, things tend to end up close even though changes. The most common things that change are lasguns and bolters actually, and they are usually described in such a way that being a different model of weapon is entirely likely.


Canadian 5th wrote:His first language isn't English, that is the point he is making. You keep telling him in a condescending manner that his English isn't up to scratch. I can understand him perfectly well, sure there will be grammar mistakes, but he has excellent English.


That quote wasn't actually a dig at him at all though. It's a general attitude on this site and you can see that many native speakers have worse English than some nonnative speakers, or people who speak it as a third language even though they learned it from a young age.


40k Calculation and Quantification @ 2011/07/05 12:10:46


Post by: Toastedandy


I still don't see how one can calculate the power of certain weapons/vehicles from descriptions. Unlike SW, where the weapons would have an indepth description, alot of weapons in 40k, (in the fluff) would simply be descriptive. And if you reference the rules for the tabletop game, you will have to include all of the rules in the game, you would not be able to pick and choose stuff that will fit.


I have no problem with grammatical errors, mostly I would be able to understand it no problem. But you should understand that alot of the people on this site would be young. The hobby is aimed at people of that age.

And in regards to the attitude of this site, if you show respect, you get respect. While if you be a jerk, people will be jerks to you.


40k Calculation and Quantification @ 2011/07/05 12:11:31


Post by: Emperors Faithful


Canadian 5th wrote:
Emperors Faithful wrote:No, what I've said, and what other people here are saying, is that you can't do such a thing for 40k. You've said you can, so by all means go for it.


Have I not been doing so?


Not really. As you yourself said, there just isn't a lot of data on the 40k side of things.


Fighters do what now?


The lasers on a fighter have been calculated to output kilotons of energy per shot from a few sources.


Could I get a source for this? I've never seen evidence of fighters putting out shots that measure up to the blast from Hiroshima.


It has always struck me as rather hilarious that ISD seem impervious to fighters, but the bigger fellas (such as the SSD) can't handle them.


Actually, the Executor wasn't downed just by a fighter. It was attacked by the entire rebel fleet and they managed to down the shields. You can see part of what was going on in the movie, they say that shields are down and to intensify point defense fire in the area lest something slip through. It just so happens that a quick and nimble A-Wing dodged most of the flak and happened to crash into the unshielded bridge before they could either cover it with another section of shield, or bring the section back online. You can find more details in the novelization of the movie.


Still, from the movie the ship doesn't appear to have suffered extensive physical damage from the other ships. It really was that one fighter that took out the bridge and caused it to crash.


Yep, and where fluff and tabletop agree, we can see that the tabletop is reliable in that regard.


Yes, the table top can agree with the fluff at times, at others not so much. Given that the fluff gives more to work with it's best to stick with that approach and explain away differences on the table as an abstraction. Much like Chess and Go are abstractions of warfare.


Eh, fair enough.

It still seems extreme. You could be a tenth of that range and likely far outside the range of more common Space armanents.


Indeed, meaning that this ship might be able to bombard from outside the range where other ships simply can't see or aim at them well enough to return fire. Rather useful if you ask me.


Yeah, having a range advantage is good and all, but 10 light minutes is still a ridiculous figure.


...er, Good luck?


Thanks, believe it or not I don't have any Star Wars books currently. So I'll have to borrow them or see if I can find them in the bargain section sometime. When do I'll PM you with what I find.


Coolio.



40k Calculation and Quantification @ 2011/07/05 12:13:57


Post by: Toastedandy


10 lightminutes?! So if the weapon you are firing would reach its target within ten minutes, IF it were travelling at light speed. If not, it would take much longer. Would the power decrease over such a distance?


40k Calculation and Quantification @ 2011/07/05 12:26:28


Post by: Canadian 5th


Toastedandy wrote:I still don't see how one can calculate the power of certain weapons/vehicles from descriptions. Unlike SW, where the weapons would have an indepth description, alot of weapons in 40k, (in the fluff) would simply be descriptive. And if you reference the rules for the tabletop game, you will have to include all of the rules in the game, you would not be able to pick and choose stuff that will fit.

I have no problem with grammatical errors, mostly I would be able to understand it no problem. But you should understand that alot of the people on this site would be young. The hobby is aimed at people of that age.

And in regards to the attitude of this site, if you show respect, you get respect. While if you be a jerk, people will be jerks to you.


You can get a fair bit of data from looking at what weapons do in the fluff. Star Wars hasn't had any details like those in the ICS until recently anyway. Also, the rules for the tabletop are most certainly abstractions as we can all agree that scale, range, and the like aren't all that realistic.

As for grammar, being young isn't the much of an excuse. I'm only 23 and some of the people that are bad are older than that and some not much younger. It's an effort thing.

Emperors Faithful wrote:Not really. As you yourself said, there just isn't a lot of data on the 40k side of things.


There will be some holes in the data, and things like an exact number will rarely be possible. That said you can get things like rough firepower estimates and rough troop numbers.


Could I get a source for this? I've never seen evidence of fighters putting out shots that measure up to the blast from Hiroshima.


Sure, though this bit isn't my own work.

Mike Wong wrote:Laser Cannons

TIE fighters are armed with "laser cannons", although the characteristics of these cannons are anything but laser-like. The nature and properties of laser cannons are both very well known and there is no need to repeat a discussion of those phenomena here unless you recruits have been neglecting your studies. However, we have some preliminary analysis on a possible quantification of those weapons in Federation units.

From Luke Skywalker's strafing run in the Battle of Yavin, a single hit upon the unshielded surface of the Death Star could be seen to cause a large flash of superheated material, enough to engulf an entire X-Wing fighter and cause thermal damage to its hull despite its shields. Since armor is not flammable and lasers do not create wide-area flashes directly, one can conclude that large portions of the Death Star's surface buildings are flashing to vapor during Luke's strafing run.

Because of the shallow angle of approach and the fact that the flashes vary in size and brightness, it is difficult to gauge the actual amount of destruction being done. However, in order to create a flash of vapour the size of an X-wing fighter, the individual blasts must be vapourizing at least one cubic metre of metal each. This is a very conservative estimate since the gas also had to shoot away from the surface so quickly it intercepted the hurtling starfighter, but it will have to suffice. At least 60GJ is required to vaporize a single cubic metre of ordinary iron, so this provides a lower limit for starfighter laser cannon energy.

We must stress the highly conservative nature of this estimate: the DS shell was constructed of heavy armor, and Imperial armor is far superior to simple iron. In The Stele Chronicles, a TIE fighter pilot deliberately flew his unshielded fighter into the atmosphere of a planet at high speed as an evasive maneuver. The unprotected armor and transparent front window of his fighter were totally unaffected by this event- an event that would easily push ordinary iron beyond its maximum service temperatures as the 20th century Space Shuttle's ceramic heat tiles demonstrate. Furthermore, Imperial dura-armor is made by "compressing and binding neutronium, lomite, and zersium molecules together through the process of matrix acceleration", according to the SWE. The use of neutronium micro-particles as interstitial alloying elements in dura-armor is strongly suggestive of extreme mechanical and thermal toughness.

"Isard's Revenge" contained a few passages describing the firepower of New Republic laser cannons, in narrative form:

pg. 7 "Two New Republic Assault Frigates, the Tyrant's Bane and Liberty Star, cruised in toward the Golan station. Though each ship was less than a third as long as the station, they bristled with fifty laser cannons and poured terajoules of coherent light into the Golan."
pg. 111 "Moonshadow was coming up and turning to port, its port-side batteries firing Direption's aft shields. Red and blue laser and ion cannon fire pumped terajoules of energy into the shields, but somehow they stayed up."

These quotes suggest that New Republic laser cannons (and ion cannons) unleash energy in the terajoule range (implying 1E12 to 1E15 joules, otherwise it would be into the petajoule range). The second quote is a bit vague, but it describes a pair of Star Destroyers doing battle. It should be noted that both ships were already heavily damaged, and are apparently left with nothing but their laser and ion cannons (since they had destroyed each others' heavy turbolaser turrets earlier in the battle). The novel does not describe the behaviour of turbolasers and heavy turbolasers in detail, except to say that a single heavy turbolaser volley is sufficient to collapse a corvette's shields and damage it so badly that it becomes a floating hulk. This is hardly surprising, given the firepower that heavy turbolasers are known to have.

Star Destroyers also carry laser cannons, arranged in quad-laser batteries along the side trenches. These turrets are designed to quickly track small fighters and the trench notches allow these turrets a large field of fire both above and below the vessel. Some questions remain: these weapons (both on the fighters and on the Star Destroyers) are explicitly described as laser cannons in all of the source material but they do not have the basic characteristics of lasers. They appear to travel at subluminal speed while lasers travel at exactly c. They are clearly visible in the vacuum of space while lasers would never be visible in vacuum. There are two possible resolutions to these conflicts:

The word "laser" is defined differently in the Star Wars universe. This is not a satisfactory explanation because the language of the Star Wars universe is not English and the films merely show everyone speaking English so that the audience can understand. Therefore, the dialect of English in the films is 20th century American English complete with all of its dialectic subtleties, as well as its technical terms such as "laser".

Imperial laser cannons use a tracer mechanism to make them visible. This mechanism acts as a targeting and visualization aid for fighter pilots and defensive gunners, and it consists of an energy discharge which follows the laser and glows visibly. Assuming that it consists of particles which have mass, the tracer will lag behind the laser itself. This would explain the fact that the TESB asteroids actually began melting before the visible tracer arrived.



Still, from the movie the ship doesn't appear to have suffered extensive physical damage from the other ships. It really was that one fighter that took out the bridge and caused it to crash.


It was a combination of damage suffered from the turbolasers of the rebel fleet, the fighter, and then being pulled into the gravity well of the Death Star after an engine misfire. Had the DS not been there then it would have recovered, or simply smashed through a smaller ship.

Yeah, having a range advantage is good and all, but 10 light minutes is still a ridiculous figure.


Indeed it does seem large, but those are the facts.


Automatically Appended Next Post:
Toastedandy wrote:10 lightminutes?! So if the weapon you are firing would reach its target within ten minutes, IF it were travelling at light speed. If not, it would take much longer. Would the power decrease over such a distance?


Yes, it would take at least 10 minutes unless the weapon was very special. However you don't lose power in vacuum like you do on earth. Projectiles don't slow, lasers spread only very little, and most other weapons would also be unaffected. Some things like particle beams, or plasma weapons could fade over distance though, but these are exceptions.


40k Calculation and Quantification @ 2011/07/05 12:33:26


Post by: Toastedandy


Canadian 5th wrote:
Toastedandy wrote:I still don't see how one can calculate the power of certain weapons/vehicles from descriptions. Unlike SW, where the weapons would have an indepth description, alot of weapons in 40k, (in the fluff) would simply be descriptive. And if you reference the rules for the tabletop game, you will have to include all of the rules in the game, you would not be able to pick and choose stuff that will fit.

I have no problem with grammatical errors, mostly I would be able to understand it no problem. But you should understand that alot of the people on this site would be young. The hobby is aimed at people of that age.

And in regards to the attitude of this site, if you show respect, you get respect. While if you be a jerk, people will be jerks to you.


You can get a fair bit of data from looking at what weapons do in the fluff. Star Wars hasn't had any details like those in the ICS until recently anyway. Also, the rules for the tabletop are most certainly abstractions as we can all agree that scale, range, and the like aren't all that realistic.

As for grammar, being young isn't the much of an excuse. I'm only 23 and some of the people that are bad are older than that and some not much younger. It's an effort thing.


And the jerk thing?


40k Calculation and Quantification @ 2011/07/05 12:35:38


Post by: Canadian 5th


Toastedandy wrote:And the jerk thing?


I can be a jerk, other people have been jerks back. I'm no less correct if I present data in a a pleasant fashion or if it's in a less pleasant way.


40k Calculation and Quantification @ 2011/07/05 12:40:13


Post by: Toastedandy


But by that logic, then people should have a right to be a jerk back. You keep calling them on it, even if it is deserved.

Anyway, as I have said before, the massive lack of fluff apart from the descriptive which would be vague/exaggerated/inaccurate, it would be near impossible to get the calculations correct.


40k Calculation and Quantification @ 2011/07/05 12:48:27


Post by: Emperors Faithful


Canadian 5th wrote:
Emperors Faithful wrote:Not really. As you yourself said, there just isn't a lot of data on the 40k side of things.


There will be some holes in the data, and things like an exact number will rarely be possible. That said you can get things like rough firepower estimates and rough troop numbers.


Troop numbers yes, there's solid fluff on that. But nothing to help with firepower or the like.



Could I get a source for this? I've never seen evidence of fighters putting out shots that measure up to the blast from Hiroshima.


Sure, though this bit isn't my own work.


Mike Wong wrote:*wall of text*


The conservative estimate of 60-100GJ mentioned here is much less impressive that that of several kilotons.


Still, from the movie the ship doesn't appear to have suffered extensive physical damage from the other ships. It really was that one fighter that took out the bridge and caused it to crash.


It was a combination of damage suffered from the turbolasers of the rebel fleet, the fighter, and then being pulled into the gravity well of the Death Star after an engine misfire. Had the DS not been there then it would have recovered, or simply smashed through a smaller ship.


Yeah, there are contributing factors. But we are still talking about a single fighter contributing (extensively) to the destruction of a Super Star Destroyer.

Yeah, having a range advantage is good and all, but 10 light minutes is still a ridiculous figure.


Indeed it does seem large, but those are the facts.


This is the part where you take such things with a grain of salt.


Automatically Appended Next Post:
Canadian 5th wrote:
Toastedandy wrote:And the jerk thing?


I can be a jerk, other people have been jerks back. I'm no less correct if I present data in a a pleasant fashion or if it's in a less pleasant way.


No. This is dakka. That attitude isn't going to get you anywhere here.


40k Calculation and Quantification @ 2011/07/05 12:49:50


Post by: Canadian 5th


Toastedandy wrote:But by that logic, then people should have a right to be a jerk back. You keep calling them on it, even if it is deserved.


Yup, I'll call them on it and if they want to call me on it fine. However this is getting off topic.

Anyway, as I have said before, the massive lack of fluff apart from the descriptive which would be vague/exaggerated/inaccurate, it would be near impossible to get the calculations correct.


Star Wars is the same, until the ICS for Episode 3 came out we had no hard numbers either. Yet people don't complain about that. 40k is somewhat more chaotic, but that can also make working with it more fun.


40k Calculation and Quantification @ 2011/07/05 12:54:47


Post by: Toastedandy


But then, you have no right to question the attitude of this forum. You would get helpful replies if you didn't insult everyone's competence. Rather than trolls and people asking for the topic to be closed.


But 40K doesnt have an ICS (Don't know what it is, presume it has numbers for the weapons etc) so trying to work it out from descriptions will be impossible, but I have been proven wrong before, and I wish you the best of luck.


40k Calculation and Quantification @ 2011/07/05 12:57:39


Post by: Kilkrazy


How do Imperial ships dump waste heat?


40k Calculation and Quantification @ 2011/07/05 13:01:02


Post by: Emperors Faithful


Kilkrazy wrote:How do Imperial ships dump waste heat?


Are we talking 40k Imperial Navy or Star Wars Imperial, becuase...

Spoiler:
I have no clue about either.


40k Calculation and Quantification @ 2011/07/05 13:13:34


Post by: Canadian 5th


Kilkrazy wrote:How do Imperial ships dump waste heat?


There are actually a few ways this could be done. If you're referring to IoM ships, I don't think it has been explained though they could use heat sinks and some storage medium. You can also radiate heat by venting gas or a liquid after it absorbs the heat. In the case of Wars they radiate it as neutrinos.


Automatically Appended Next Post:
Toastedandy wrote:But then, you have no right to question the attitude of this forum. You would get helpful replies if you didn't insult everyone's competence. Rather than trolls and people asking for the topic to be closed.


You assume that people don't support me in this. Just because they don't post in the thread doesn't mean people don't enjoy what I'm doing. Some have commented on the attitude, but most understand that it's frustration and not actual anger. It can be hard dealing with people who don't seem to try when you're making an effort. Sometimes it gets the better of me.


But 40K doesnt have an ICS (Don't know what it is, presume it has numbers for the weapons etc) so trying to work it out from descriptions will be impossible, but I have been proven wrong before, and I wish you the best of luck.


The ICS is Incredible Cross Sections, and it does show some good details on the ships it covers. It's true that 40k doesn't have anything similar, but then again people were doing this for Wars when they didn't have one either.


40k Calculation and Quantification @ 2011/07/05 15:58:58


Post by: Brother Coa


Toastedandy wrote:
Canadian 5th wrote:
And what is your problem with countries that doesn't have Engish as their first language? People are at least trying...
You are not one of those guys who thinks that North America is the whole world?


Americans and Brits are as bad as anybody at times.


His first language isn't English, that is the point he is making. You keep telling him in a condescending manner that his English isn't up to scratch. I can understand him perfectly well, sure there will be grammar mistakes, but he has excellent English.


Thank you for compliment


40k Calculation and Quantification @ 2011/07/05 16:12:42


Post by: Grey Templar


Why is how they dump waste heat an important thing?(aside from just wanting to know)

Lets figure out how powerful the weapons are and how strong their armor is.

lets also drop talking about people's grammer, spelling, and punctuation. its off topic and should only be reported to the Mods if it makes the post unreadable. I think everyones posts have been clearly legible thus far.





Now, back to the topic.


Your math is off, you punched in kilograms and meters per second, when you surely meant tons and forgot to use kilometers per second. That punches the numbers up from sub kiloton to 2 gigatons. Not bad for a lower end weapon.


I belive i did use Kilometers/sec.

from BL books, I belive it doesn't take more then a few seconds for weapons fire to cross these distances. assuming 3 seconds for contact with the target, that gives an estimated weapons velocity of 18,713.6 km/sec.

if we assume a Landraider sized projectile(as is said to be an example) made out of 260 cubic meters of Uranium(a dense material suitable for an armor piercing warhead)

this gives us a weight of 496.6 kilograms.

(1/2)496.6 Kilograms times 18,713.6 km/sec squared gives us a kinetic energy value of 8.9654x10^10 joules.

that gives us 86,954,368.25 KJ of force for a single slug fired in their hundreds by IoM ships.


yup. If i am still missing something please show me exactly. this is about as high as i can get with math.


a typical ship in BFG has an armor rating of 5+. this means you need to roll a 5+ to do damage with each shot you get. otherwise the shot either bounces, is absorbed by the armor, or hits a non-vital area.

each volly of these 86,954,368.25 KJ projectiles, I think 100 rounds would be a fair estimate to represent a single Weapon battery shot in game, has a 1/3 chance to deal damage to the typical BFG ship.

we can then say that it takes 3 of these vollys to deal 1 point of damage.


for sake of sanity, I will translate the number for these projectiles from Kilojoules into Gigajoules(1 billion joules)

a single round imparts 86.95 Gigajoules. rounded to 87.

100 rounds per volly gives 8,700 gigajoules.

3 vollys gives 26,100 gigajoules to deal 1 point of damage to a typical BFG imperial cruiser(on the side and rear. prow armor is better)

for comparason, 63,000 gigajoules was the approximate output of the Hiroshima atomic blast. 3 vollys from weapon batteries would have a lowball damage output of 1/2 an atomic bomb from impact alone.

this doesn't take into account the possability of the damage creating hull breaches. Imperial ships are built around sections, allowing them to be closed off in the event of a hull breach. a Ship can still function with most of its sections breached, although it may suffer a reduction in damage output.



Lances are a little different. they have a flat 4+ to cause damage and completely ignore a ships armor, only being stopped by shields.



40k shields work on a different principal to Star Wars shields.

Void Shields operate by "teliporting" the incoming fire into the warp. the energy of the object being deflected is irrelevent, but only shots which would cause actual damage are teliported in this way. near misses are ignored.

Voids can only be stressed beyond their ability to keep up with the warp portal generation so volume of fire is required to get past them, but the shields are always active and can't be brought down for a period of time like Star Wars shields can.

a Star Wars shield is like "We can take this much damage before the shield drops"

a Void shield is like "We can ignore this many individual shots per second. anything beyond that gets through and hits the armor"

Void shields can be disrupted by the presense of high levels of radiation(such as from explosions) and space junk. Void shields can block asteroids by Teliporting them into the warp as they would enemy fire.


40k Calculation and Quantification @ 2011/07/05 16:15:06


Post by: Brother Coa


Canadian 5th wrote:
Gravity is still the same, water still boils the same, people are made of more or less the same stuff. The only laws of physics that we can assume change are the ones we see directly.


It is the same because we see it that way, it may be totally different thing there than here. And maybe that is some other force than the gravity affecting people there, maybe it's dark matter, we just don't know and because of that can't make assumptions.

Why are you hung up on exact numbers that we won't find. This thread is about doing the best we can with what we're give, so I can say that most worlds have a PDF and contribute to the guard in some way, we get exact numbers for some conflicts and less data on others.


Just to show how math and Sci-Fi don't get along. I give you numbers and that alone should point how hard it is to combine those two. And there are so much things in sci-fi that are not possible here, like Star Wars FTL drive or Azagard FTL drive. Then we have more ridiculous thing like one guy holding an ENTIRE PLANET all by himself, on ground, against countless enemies. And the worst part is it really happened there, it's not like Chuck Norris here...

And this thread is turned to another Star Wars vs. Warhammer 40000 numbers and bulletins...




40k Calculation and Quantification @ 2011/07/05 19:16:58


Post by: Zefig


Aside from a bit at the beginning, I don't think this thread has really been too much into the Star Wars vs. 40K theme. The Star Wars is more here because it's a convenient example.

As far as the math with 40k goes, pure numbers aren't the only things that can be used for calculations. If you can find fluff examples of weapons destroying or failing to destroy every day objects, that'd be a great start.

Anyway, Canadian 5th, I've enjoyed the discussion so far. I'm not versed enough in the non-game 40k material to contribute much, but it's got the engineer side of me intrigued, at least.


40k Calculation and Quantification @ 2011/07/05 19:41:14


Post by: Kilkrazy


Grey Templar wrote:Why is how they dump waste heat an important thing?(aside from just wanting to know)

.


Because no process of energy transfer is 100% efficient. Therefore any ship using very large amounts of energy to power its weapons must produce large amounts of waste heat. This had to be got rid of somehow to avoid the ship vapourising itself. Discharging the waste heat, of course, is an energy transfer process, so it produces waste heat, which requires another layer of heat trapping and exhaust.

You can easily see how the problem multiplies as the amount of energy used increases. At some point, the minute amount of waste heat that cannot be got rid of will be enough to vapourise the ship. This puts a physical limit on the size of weapons that can be employed.


40k Calculation and Quantification @ 2011/07/05 20:09:16


Post by: Psienesis


If you're basing the ship-to-ship combat on Rogue Trader, which (I assume) is based on BFG, then each ship's "turn" in the course of combat is 30 standard minutes in length.

This is important when it comes down to figuring out firing rates, as a ship can only fire each one of its weapon systems once per turn at maximum (some few are every-other-turn)... which means that even their energy weapons require half an hour to recharge.

This is not the case in SW, where the capital ships will fire barrages of their turbo-lasers and what-not in the space of seconds, and the DS2 fired its main cannon several times in a very short period of time.


40k Calculation and Quantification @ 2011/07/05 23:05:52


Post by: Grey Templar


I think Rogue Trader isn't going to be a good source of material because it is primarly a role playing game and it would be bad if you could just vaporize characters in one blast. so the space weapons are likely massivly toned down. they also aren't Imperial Navy, and would likely have poorer quality weaponry that doesn't charge up as fast.


I should also clarify that my numbers arn't complete because they don't take into account any shaping of the rounds for maximum penetration capabilities. this will increase the penetrating power with changing its KE amount so the rounds could, and probably do, much more damage then the math would indicate.

and as to heat dissapation. yeah, its important, but not so much in a direct confrontational discussion. we can assume they have something super efficient(maybe they disappate the energy into the Warp. its rumored this is how their plasma generators are able to provide such massive amounts of power, by drawing on the Warp)


40k Calculation and Quantification @ 2011/07/06 02:07:57


Post by: Canadian 5th


Grey Templar wrote:Why is how they dump waste heat an important thing?(aside from just wanting to know)

Lets figure out how powerful the weapons are and how strong their armor is.


Dealing with waste heat is hard in space actually, so it's an important question. It's why you can stay underwater for longer than you can space walk. Underwater you can use a rebreather to recycle the air, in space you vent air slowly to keep cool.

I belive i did use Kilometers/sec.


Hmm, because even using (496.6 kg / 2) x 18,713,600m/s ^ 2 you get the following. 8.695x10^16 joules. It must be a unit conversion failure. You need to convert the km/s to m/s in order to use the equation correctly. Also, something as large as a land raider would mass more than a car and most cars are heavier than 496.6 kilograms, so when you convert that to tons, which if it was solid metal would make sense. Thus with a near 500 ton projectile you would get this:

469,600 / 2 x 18,713,600^2 = 8.22x10^19 joules.

However doing my own math I think that a land raider is sized solid slug is heavier than that, so here's the even higher end:

3820000 / 2 x 18,713,600^2 = 6.69x10^20 joules or around 160 gigatons per shot and 640 gigatons per 4 shot broadside

a typical ship in BFG has an armor rating of 5+. this means you need to roll a 5+ to do damage with each shot you get. otherwise the shot either bounces, is absorbed by the armor, or hits a non-vital area.

each volly of these 86,954,368.25 KJ projectiles, I think 100 rounds would be a fair estimate to represent a single Weapon battery shot in game, has a 1/3 chance to deal damage to the typical BFG ship.

we can then say that it takes 3 of these vollys to deal 1 point of damage.


Hmm, well these projectiles hurt more than you're giving them credit for for starters, but I think you're over rating the number of shots fired. We can see the number of weapons emplacements on the BFG models and the guns are rather large enough to be seen. A battery of four guns would need to fire 25 times each in a round, and could only fire 4 shots per volley. I think that they aim to score a few solid hits when they fire instead. However, the guns are absurdly large so there is a chance they fire a shotgun like spread, I just doubt that as they are described as doing so.

Also even if your math is correct those hits are each weaker than the asteroids that don't often breach shields. Even together they aren't exactly a threat when we look at petaton scale lances.

Yet, when we look at my math we see that things are a bit different when you use a correct weight and speed. When a broadside can help by adding gigaton scale impacts at a higher rate of fire than lances they certainly hold their own.

Lances are a little different. they have a flat 4+ to cause damage and completely ignore a ships armor, only being stopped by shields.


Well given that lances are petaton scale, many orders of magnitude higher than gigatons, that makes sense.

40k shields work on a different principal to Star Wars shields.

Void Shields operate by "teliporting" the incoming fire into the warp. the energy of the object being deflected is irrelevent, but only shots which would cause actual damage are teliported in this way. near misses are ignored.

Voids can only be stressed beyond their ability to keep up with the warp portal generation so volume of fire is required to get past them, but the shields are always active and can't be brought down for a period of time like Star Wars shields can.


I'm not sure that's the whole story really. We know that 40k torpedoes work by bypassing void shields and hitting the hull, and we know that void shields aren't full coverage as evidenced by lances being stopped by them and still having a 50/50 chance to hit. So if 50% of lances still hit, and they fire more powerful, yet lower ROF shots than a heavy turbolaser group, all things we know are true, then a Star Wars ship has a good chance of getting fire through a 40k ship's defenses. The saving grace will be how tough the hull is and the fact that they can hit hard per shot.

a Star Wars shield is like "We can take this much damage before the shield drops"

a Void shield is like "We can ignore this many individual shots per second. anything beyond that gets through and hits the armor"

Void shields can be disrupted by the presense of high levels of radiation(such as from explosions) and space junk. Void shields can block asteroids by Teliporting them into the warp as they would enemy fire.


Well we know that Star Wars ships fight in heavy ECM and ECCM fields all the time and love to jam enemy detection methods heavily. We also know that they have toys like Mag Pulse weapons and Ion cannons, both of which seem to work by doing damage like an idealized form of EMP. So these could be weapons that void shields dislike, they could just as easily be ignored though.


Automatically Appended Next Post:
Brother Coa wrote:
Canadian 5th wrote:
Gravity is still the same, water still boils the same, people are made of more or less the same stuff. The only laws of physics that we can assume change are the ones we see directly.


It is the same because we see it that way, it may be totally different thing there than here. And maybe that is some other force than the gravity affecting people there, maybe it's dark matter, we just don't know and because of that can't make assumptions.


We can because without making certain assumptions we won't know anything. Also, it's set in a different version of our galaxy so I think we can say that, outside of some warp effected regions, things work the same.

Just to show how math and Sci-Fi don't get along. I give you numbers and that alone should point how hard it is to combine those two. And there are so much things in sci-fi that are not possible here, like Star Wars FTL drive or Azagard FTL drive. Then we have more ridiculous thing like one guy holding an ENTIRE PLANET all by himself, on ground, against countless enemies. And the worst part is it really happened there, it's not like Chuck Norris here...

And this thread is turned to another Star Wars vs. Warhammer 40000 numbers and bulletins...


People seem interested in the numbers I am able to give, just because we can't tell down to the single joule how energetic something is, or down to the man how large the guard is doesn't mean this isn't worth doing.


Automatically Appended Next Post:
Zefig wrote:Aside from a bit at the beginning, I don't think this thread has really been too much into the Star Wars vs. 40K theme. The Star Wars is more here because it's a convenient example.

As far as the math with 40k goes, pure numbers aren't the only things that can be used for calculations. If you can find fluff examples of weapons destroying or failing to destroy every day objects, that'd be a great start.

Anyway, Canadian 5th, I've enjoyed the discussion so far. I'm not versed enough in the non-game 40k material to contribute much, but it's got the engineer side of me intrigued, at least.


Glad you're able to at least sit back and watch. I'll repost a link from earlier that you should enjoy.

The Grand 40k Calculation Thread


Automatically Appended Next Post:
Kilkrazy wrote:Because no process of energy transfer is 100% efficient. Therefore any ship using very large amounts of energy to power its weapons must produce large amounts of waste heat. This had to be got rid of somehow to avoid the ship vapourising itself. Discharging the waste heat, of course, is an energy transfer process, so it produces waste heat, which requires another layer of heat trapping and exhaust.

You can easily see how the problem multiplies as the amount of energy used increases. At some point, the minute amount of waste heat that cannot be got rid of will be enough to vapourise the ship. This puts a physical limit on the size of weapons that can be employed.


Spot on. Did you see my idea on the last page on how that might be avoided by 40k?


Automatically Appended Next Post:
Psienesis wrote:If you're basing the ship-to-ship combat on Rogue Trader, which (I assume) is based on BFG, then each ship's "turn" in the course of combat is 30 standard minutes in length.

This is important when it comes down to figuring out firing rates, as a ship can only fire each one of its weapon systems once per turn at maximum (some few are every-other-turn)... which means that even their energy weapons require half an hour to recharge.

This is not the case in SW, where the capital ships will fire barrages of their turbo-lasers and what-not in the space of seconds, and the DS2 fired its main cannon several times in a very short period of time.


I think you're certainly right on there being a recharge difference, but it's hard to say exactly how long it is as some sources will say 30 minutes and up, and others will show them firing more often. That said, those are for smaller ships trying to mount larger guns, so what a rouge trader struggles with an Emperor class could fire much faster.


Automatically Appended Next Post:
Grey Templar wrote:I think Rogue Trader isn't going to be a good source of material because it is primarly a role playing game and it would be bad if you could just vaporize characters in one blast. so the space weapons are likely massivly toned down. they also aren't Imperial Navy, and would likely have poorer quality weaponry that doesn't charge up as fast.


I think again, that there is some truth to this, and I'll try to find some better numbers on refire rates.

I should also clarify that my numbers arn't complete because they don't take into account any shaping of the rounds for maximum penetration capabilities. this will increase the penetrating power with changing its KE amount so the rounds could, and probably do, much more damage then the math would indicate.


The shape changes penetration, not energy.

and as to heat dissapation. yeah, its important, but not so much in a direct confrontational discussion. we can assume they have something super efficient(maybe they disappate the energy into the Warp. its rumored this is how their plasma generators are able to provide such massive amounts of power, by drawing on the Warp)


Yup, no matter what they use it's clear that whatever it is works.



40k Calculation and Quantification @ 2011/07/06 04:05:29


Post by: Grey Templar


thats what I meant as to the shape. magnification of the force that exists.

Void Shields would definitly stop an Ion Cannon, which is purpose built to go through SW energy shields, not Void Shields. its a farily specialized weapon against their own Shield tech.


I don't know why fighters and Torpedos are able to slip through Voids. the Torpedos use simple proximity detectors to head for any ship that crosses their path(you can hit your own ships with torpedos. they don't discriminate) so i don't think they can just slip under the Voids. I suspect they have some sort of device which disables the void at that point so it can slip through. a Void shield disrupter.


Torp Specs.

they are described as being about the size of a Skyscraper. Empire State Building sized with a Fusion Warhead to match and powered by a Fusion generator which also serves to add to the destructive power.

Now, I would expect a Nuclear warhead to match a missile of that size to measure in Giga if not Tera-tons.

In space, you won't get the massive shockwave which does most of the damage in an Atmosphere. So the damage will be mostly be caused by the radiation heating up the target ships hull, potentially melting an entire section. not to mention the damage to the crew. But because 40k ships are so large, the damage will be localized and the large crew will barely notice the damage. Space Ships are also, by dint of being in space, designed to withstand radiation so once the blast is done the Radiation danger will be largely contained in the target area.

this will reduce the possable damage a Torpedo can do in space, but the damage is quite severe at the point of impact.



Weapon batteries:

the large weapons visable on the models arn't the only weapons which are firing. they also have many many smaller guns which are too small to represent on the actual model and some which are only visable on a model you have in your hands so they don't just have 4-8 guns for a broadside. its more like 4-8 guns which shoot rounds much larger then Landraiders, and then about 100 Macro-cannons(which fire the Landraider slugs and actually form the primary armament)

http://wh40k.lexicanum.com/wiki/Weapons_Batteries

Weapon batteries, according to Lexi, aren't just Macro-cannons but also plasma projectors, laser cannons, missile launchers, rail guns, fusion beamers and graviton pulsars.


40k Calculation and Quantification @ 2011/07/06 09:21:15


Post by: Canadian 5th


Grey Templar wrote:Void Shields would definitly stop an Ion Cannon, which is purpose built to go through SW energy shields, not Void Shields. its a farily specialized weapon against their own Shield tech.


Not really... They're designed to cripple a ship by killing electrical systems. They don't have any special properties against shields at all really.


I don't know why fighters and Torpedos are able to slip through Voids. the Torpedos use simple proximity detectors to head for any ship that crosses their path(you can hit your own ships with torpedos. they don't discriminate) so i don't think they can just slip under the Voids. I suspect they have some sort of device which disables the void at that point so it can slip through. a Void shield disrupter.


It's never really been mentioned that they defeat shields with any technology. It's equally likely they simply dodge the void shields on the way in. Fighters could even slip under them.

Torp Specs.

they are described as being about the size of a Skyscraper. Empire State Building sized with a Fusion Warhead to match and powered by a Fusion generator which also serves to add to the destructive power.

Now, I would expect a Nuclear warhead to match a missile of that size to measure in Giga if not Tera-tons.


Makes sense that they would be gigatons at least, though we do see weaker examples.

In space, you won't get the massive shockwave which does most of the damage in an Atmosphere. So the damage will be mostly be caused by the radiation heating up the target ships hull, potentially melting an entire section. not to mention the damage to the crew. But because 40k ships are so large, the damage will be localized and the large crew will barely notice the damage. Space Ships are also, by dint of being in space, designed to withstand radiation so once the blast is done the Radiation danger will be largely contained in the target area.

this will reduce the possable damage a Torpedo can do in space, but the damage is quite severe at the point of impact.


Yup, in space things like torpedoes can deal damage via radiation. However if they actually make contact then their explosion will propagate through the ship's hull.

the large weapons visable on the models arn't the only weapons which are firing. they also have many many smaller guns which are too small to represent on the actual model and some which are only visable on a model you have in your hands so they don't just have 4-8 guns for a broadside. its more like 4-8 guns which shoot rounds much larger then Landraiders, and then about 100 Macro-cannons(which fire the Landraider slugs and actually form the primary armament)


Yeah, I should have realized that. Still, even a full battery nailing every shot is still only in the teraton range and each shot is going to be less effective against Wars style shielding than a larger shot. However against void shields mass fire that aims to slip one through makes sense.

Weapon batteries, according to Lexi, aren't just Macro-cannons but also plasma projectors, laser cannons, missile launchers, rail guns, fusion beamers and graviton pulsars.


Of course they would have multiple types of batteries.


40k Calculation and Quantification @ 2011/07/06 14:22:12


Post by: Grey Templar


well with the Ion Cannon i meant that it just happens to pass right through for some reason. the IoN particles disrupt the shields energy field.

Void shields work differently and so would stop it as normal.


40k Calculation and Quantification @ 2011/07/06 14:26:57


Post by: Canadian 5th


Grey Templar wrote:well with the Ion Cannon i meant that it just happens to pass right through for some reason. the IoN particles disrupt the shields energy field.

Void shields work differently and so would stop it as normal.


Not really, the weapon was just powerful enough that it crushed the shields and rammed on home.

Also, didn't you say that radiation could drop void shields?


40k Calculation and Quantification @ 2011/07/06 15:11:17


Post by: Grey Templar


it does, but only in massive amounts capable of doing actual damage to the ship.


40k Calculation and Quantification @ 2011/07/06 15:32:59


Post by: Canadian 5th


Grey Templar wrote:it does, but only in massive amounts capable of doing actual damage to the ship.


So a funky energy gun that clearly isn't just made of ions, that can crush an ISD's shields should cause issues then.


40k Calculation and Quantification @ 2011/07/06 16:04:08


Post by: Grey Templar


more like the Radiation will be stopped by the shields, allowing other more lethal rounds to get through.

The Radiation clouds are detected as a threat and are teliported to the warp by the Voids, using up their ability to do it to more dangerous threats.


40k Calculation and Quantification @ 2011/07/06 18:00:54


Post by: Psienesis


Umm... if you guys haven't read it, please don't make assumptions on classes of battleships and such from Rogue Trader. It, and its supplements, covers Imperial Naval ships, all the way up to the really big Imperial cruisers.

Thirty minutes a turn, one shot per weapon per turn, regardless of the class of the ship mounting it. If you've got a really big ship? You put really big guns on it. It's the Imperial Way. Of course, a really big ship can mount more really big guns, which offers all sorts of options in combat (fire by battery, fire all guns, fire by sector, etc)

Also... well, at least in Rogue Trader, weapon emplacements are categorized by type. So, while your "macrocannon battery" might, fluff-wise, incorporate 1000 individual cannons each on your port and starboard sides, it's considered one weapon on each side (ie, port macrocannon, starboard macrocannon).

Getting a bit into the mechanics of the game, each weapon is capable of scoring multiple hits in a single shot, to represent the fact that these weapons are rarely a single tube/barrel/emitter/thingy... and also allows a much smaller ship a chance (however thin) to at least score hits against larger ships... though even then, don't take your frigate up against a battle-cruiser, unless you have tired of life.

Void shields are simplified in that they stop one successful hit per round, per shield generator. Most vessels carry 1 generator (they lack the power to field another, without sacrificing other ship functions), though most warships sport 2 or more. The bigger the ship, the more power its reactor generates... but, the bigger an area the shield generator needs to cover, the more power it draws. You don't normally see a warship sporting, say, 10 Void Shield generators and packing a Nova Cannon or anything. A ship capable of supporting that many Void Shields would barely be able to maintain life support, let alone auspex, comms and weapons were it to devote the necessary power to operate that many shield generators.


40k Calculation and Quantification @ 2011/07/06 18:04:10


Post by: Grey Templar


we arn't using RT.

were using BFG, which might be a little abstracted but it does have a broader spectrum. it also hasn't been toned down for balace very much(anyone who has seen a Necron fleet in action can attest to that)


40k Calculation and Quantification @ 2011/07/07 01:56:01


Post by: Brother Coa


Well I learned something from this thread...

If aliens ever attack Earth, I will go to Cadian 5'th and ask him about the best way to kill them, since he knows about aliens and their tech more than they themselves


40k Calculation and Quantification @ 2011/07/08 01:30:59


Post by: Psienesis



they are described as being about the size of a Skyscraper. Empire State Building sized with a Fusion Warhead to match and powered by a Fusion generator which also serves to add to the destructive power.


Maybe on the absolute largest of Imperial battle-cruisers, but a torpedo of that size does not in any way fit aboard a ship that's only 1.5km in length and 800 meters wide (a fairly standard size for something like a Sword-class frigate)... unless that ship carries just 1 torpedo tube with this torpedo already loaded into it, as its only weapon, considering the Empire State Building would be about 1/3 the size of the entire ship.


40k Calculation and Quantification @ 2011/07/08 01:32:53


Post by: Commisar Wolfie


The battle fleet Gothic rule book does indeed describe the torpedoes as being that size.


40k Calculation and Quantification @ 2011/07/08 02:47:00


Post by: Grey Templar


Psienesis wrote:

they are described as being about the size of a Skyscraper. Empire State Building sized with a Fusion Warhead to match and powered by a Fusion generator which also serves to add to the destructive power.


Maybe on the absolute largest of Imperial battle-cruisers, but a torpedo of that size does not in any way fit aboard a ship that's only 1.5km in length and 800 meters wide (a fairly standard size for something like a Sword-class frigate)... unless that ship carries just 1 torpedo tube with this torpedo already loaded into it, as its only weapon, considering the Empire State Building would be about 1/3 the size of the entire ship.


thats only about 1/4 the size of the ship and the Torpedos are stacked up inside the Hull.

you could easily fit several dozen inside the ship(yeah its cramped, but hey, its the Navy. it wouldn't be the Navy if it wasn't cramped and clostrophobic)


40k Calculation and Quantification @ 2011/07/08 09:22:35


Post by: Canadian 5th


I'll post later guys, IRL stuff has kept me away.


40k Calculation and Quantification @ 2011/07/08 10:28:50


Post by: Kilkrazy


Ions are radiation.


40k Calculation and Quantification @ 2011/07/08 14:32:19


Post by: Grey Templar


yeah, and they will be stopped by the shields just like other things.


40k Calculation and Quantification @ 2011/07/08 16:46:57


Post by: Canadian 5th


Grey Templar wrote:we arn't using RT.

were using BFG, which might be a little abstracted but it does have a broader spectrum. it also hasn't been toned down for balace very much(anyone who has seen a Necron fleet in action can attest to that)


Both sources are as valid as any others.


Automatically Appended Next Post:
Brother Coa wrote:Well I learned something from this thread...

If aliens ever attack Earth, I will go to Cadian 5'th and ask him about the best way to kill them, since he knows about aliens and their tech more than they themselves


Haha, I doubt that a fair bit. There are surely many more qualified to plan a war, even one against aliens, than I am.


Automatically Appended Next Post:
Psienesis wrote:

they are described as being about the size of a Skyscraper. Empire State Building sized with a Fusion Warhead to match and powered by a Fusion generator which also serves to add to the destructive power.


Maybe on the absolute largest of Imperial battle-cruisers, but a torpedo of that size does not in any way fit aboard a ship that's only 1.5km in length and 800 meters wide (a fairly standard size for something like a Sword-class frigate)... unless that ship carries just 1 torpedo tube with this torpedo already loaded into it, as its only weapon, considering the Empire State Building would be about 1/3 the size of the entire ship.


I'm sure they do have both smaller ships optimized for such weapons, as well as smaller torpedoes for other classes of ship. Just because we see one large torpedo doesn't mean they don't use others. Much like we don't have only one sort of missile or bomb today.


Automatically Appended Next Post:
Grey Templar wrote:yeah, and they will be stopped by the shields just like other things.


Well, we do have sources saying that void shields do have other limitations than just number of shots. They need to be positioned and that can be exploited. They are also known to drop to a large enough attack.


40k Calculation and Quantification @ 2011/07/08 16:55:25


Post by: Grey Templar


yeah, they drop to large enough attacks, but they do stop the attack itself.


so an Ion Blast would drop the shield, but wouldn't get through to the ship itself. and even then, we arn't sure if Adamentium and Ceramite conducts so the Ion might not do anything. we should assume it does though.


40k Calculation and Quantification @ 2011/07/08 17:10:28


Post by: Canadian 5th


Grey Templar wrote:yeah, they drop to large enough attacks, but they do stop the attack itself.


so an Ion Blast would drop the shield, but wouldn't get through to the ship itself. and even then, we arn't sure if Adamentium and Ceramite conducts so the Ion might not do anything. we should assume it does though.


Oh, okay. Just trying to clarify if you were saying that the attack would be absorbed with the shield staying up, or if you agreed that they can drop to large attacks. Glad we see things more or less the same.

On the Ino blast itself, I don't think it would effect an IoM ships as much as it would a Star Wars ship. The IoM tends to backup its backup systems and even if that fails they will man the winches and aim and fire by hand if need be. Much better to use such a weapon to lead a volley of turbolasers.


40k Calculation and Quantification @ 2011/07/11 16:44:38


Post by: Ruckdog


One point about torps in BFG; one point of strength does not necessarliy equal one torp. The Tau are a good example; their torp salvos are described as beeing many, many smaller missles fired in a single volley. In the case of the Cobra, I've always held that they fire smaller torps than the cruisers do; the model supports this, since it actually has 4 ports on its bow that are presumably torpedo tubes, and yet only fires a strength 2 torp salvo.


40k Calculation and Quantification @ 2011/07/11 19:09:37


Post by: Psienesis


Quite possible, yes, and is the same philosophy that RT follows with ship weapons. A "Sunsear Laser Battery" isn't, necessarily, a single las-cannon, it might be dozens, or hundreds of smaller lasers that launch a concentrated attack when given the fire order.