01-12-2017, 04:51 PM | #21 | |
Join Date: Jan 2008
Location: Somewhere between Cape Horn and Zenith Point
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Re: Combining and Layering Flexible Armor Against Firearms
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I confess that I prefer approaches that mirror more realistically, despite a tick more complexity, but nothing too “heavy” to slow-down the game. Last edited by General Lee; 01-12-2017 at 07:08 PM. |
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01-12-2017, 04:56 PM | #22 |
Join Date: Feb 2005
Location: Berkeley, CA
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Re: Combining and Layering Flexible Armor Against Firearms
Note that fundamentally, the rounds level IIIa are supposed to stop have a total energy of 12-15J/mm^2, while the rounds level III is supposed to stop have a total energy of ~75J/mm^2, and the protection for flexible armor is fairly linear in thickness.
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01-12-2017, 06:13 PM | #23 | |
Join Date: Jan 2008
Location: Somewhere between Cape Horn and Zenith Point
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Re: Combining and Layering Flexible Armor Against Firearms
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Still, this kind of information makes me uncomfortable to state that one additional layer of, say, level IIIa armor, would give the same “protection” than a additional layer of a level II armor. |
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01-12-2017, 06:33 PM | #24 |
Join Date: Feb 2005
Location: Berkeley, CA
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Re: Combining and Layering Flexible Armor Against Firearms
Level III is hard armor, but the main point is that you'd actually expect a rifle to shoot through around five level IIIa vests.
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01-12-2017, 06:57 PM | #25 | |
Join Date: Jan 2008
Location: Somewhere between Cape Horn and Zenith Point
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Re: Combining and Layering Flexible Armor Against Firearms
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The point is that combined in layers of soft armor, did not work against firearms, realistically, as stated in core rules. So how to better represent that realistically? That what I was looking for. Eventually, stacking soft armor would stop rifle rounds, but that would be awkward, cumbersome, and heavy. Still, it happened before, and I maybe could use it in the future in one of my sessions. I think we are in the same page here, not in crash route. |
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01-13-2017, 12:57 AM | #26 | |
Join Date: Jan 2010
Location: Brighton
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Re: Combining and Layering Flexible Armor Against Firearms
Cheers!
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Just to say the (IIa+IIIa+IIIa+IIIa+IIIa) wouldn't stop 5d as per the article, its: Armour as Dice 5d vs. (2d+1)+(3d+2)+(3d+2)+(3d+2)+(3d+2) turns into Flexible armour 5d vs. (2+3+3+3+3) 5d - 14 = 1d don't get me wrong not massive penetration by any means. One more IIIa vest would stop it though. But if you want to further penalise stacking, DanHowards suggestion of -1 dice per layer in combination here would certainly give you that it would be (2d+1)+(2d+2)*+(1d+2)+(0d+2)+(0d+2) = 5d-5 = 3d+2 In fact it simplifies the calculation because you can just ignore the layers past the number of dice in the highest rated layer. In the case above only three layers matter, you could safely ignore the 4th & 5th layers. It does mean in theory that 20, 100 or 1,000 kevlar vests won't stop the round, but really this is already fringe to begin with before we start worrying about '100 vests' so IMO it doesn't matter. But if you really want to discourage munchkins doing this enforce the -DX penalty rules for additional layers (IME there's nothing munchkins hate more than being less awesome). Thing is with all this he doesn't need to wear 5 layers of vest here, he could just wear one layer with a trauma plate in. It's going to be lighter, cheaper, and considerably more effective at stopping a rifle, and less annoying than 5x vests *not quite sure how it would apply in mixed stacks but either way we're only talking the difference of 1-2 points here Last edited by Tomsdad; 01-13-2017 at 03:11 PM. |
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01-13-2017, 02:04 AM | #27 |
Join Date: Oct 2007
Location: Kentucky, USA
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Re: Combining and Layering Flexible Armor Against Firearms
How do your calculations work out if you factor in the 1.3 to 1.7 armor divisors a lot of modern bullets would have? I recall a lot of the more detailed ballistics models for GURPS include them in calculations of penetration.
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01-13-2017, 04:39 AM | #28 | |
Join Date: Jan 2010
Location: Brighton
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Re: Combining and Layering Flexible Armor Against Firearms
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But either way if they do you are get better penetration. Although if you go with the rules for flexible armour from "Gaming Ballistic" it's going to come down to thresholds and how you convert the amended DR to dice and pluses. Last edited by Tomsdad; 01-13-2017 at 06:27 AM. |
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01-13-2017, 04:15 PM | #29 | |
Join Date: Jun 2013
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Re: Combining and Layering Flexible Armor Against Firearms
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*Well, unless using the common houserule of capping penetrating damage at HP or similar (the version in HT caps injury, and thus makes there be no difference between those two attacks). |
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01-13-2017, 04:17 PM | #30 | |
Join Date: Jul 2008
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Re: Combining and Layering Flexible Armor Against Firearms
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Tags |
flexible armor, high-tech, layering armor |
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