03-13-2014, 05:18 PM | #11 |
Join Date: Nov 2006
Location: Fayetteville, Arkansas
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Re: Gun Generator: v0.1
Well, upon pulling out High Tech the 9x19 has 160 yards (closer to 452) ,the 9x18 has 110 yards (closer to 310x)
Of note with other rounds the 7.63x25 (~.3) has around x600 compared to the 7.62x39's x1666, the 7.62x51's x3333, and the 7.62x54's 3,666. So, maybe we should have some factor of case length in there too. Maybe ball-park it around Caliber x(case ratio x200)? That's obviously just a ball park figure, and I don't really know if it'll work for the majority of rounds. |
03-14-2014, 08:31 AM | #12 |
Join Date: Dec 2009
Location: Caxias do Sul, Brazil
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Re: Gun Generator: v0.1
What about projectile weight?
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I've revised the Low Tech weapons table: http://forums.sjgames.com/showthread.php?t=112532 |
03-14-2014, 10:01 AM | #13 |
Join Date: Mar 2013
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Re: Gun Generator: v0.1
I actually just worked out the figure for that, after yet another ass-ton of math (about 2.5 hours and 6 pages of scribbles). But I've recently discovered that it plays a closer role with damage and range than I thought, and so I'm waiting to post it until I've got a better understanding of the big picture. I should have it up later today.
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03-14-2014, 01:27 PM | #14 | |
Join Date: Nov 2006
Location: Fayetteville, Arkansas
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Re: Gun Generator: v0.1
Quote:
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03-14-2014, 10:59 PM | #15 |
Join Date: Mar 2013
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Re: Gun Generator: v0.1
Sorry for not posting earlier, but I am just a few number crunches away from a full-fledged comprehensive system for Conventional Firearms.
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03-14-2014, 11:34 PM | #16 |
Join Date: Nov 2006
Location: Fayetteville, Arkansas
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Re: Gun Generator: v0.1
:D Awesome!
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03-15-2014, 02:38 PM | #17 |
Join Date: Apr 2007
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Re: Gun Generator: v0.1
Yeah, I miss the old 3E Vehicle rules... the system that had in it for weapons I used to re-engineer hand-held firearms for a more compatible system... that way if I needed a new type of gun it fit into the others exceedingly well.
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03-20-2014, 08:58 PM | #18 | |
Join Date: Aug 2004
Location: In the UFO
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Re: Gun Generator: v0.1
Quote:
Here is output from a sample weapon, an attempt at a rough design of a typical Bofors 40mm automatic cannon: 40mm Autocannon (TL6): A heavy automatic cannon often installed as an anti-aircraft gun on warships. It is conventional 40mm L56 rifled heavy automatic weapon (CE 365 kJ) using cased ammunition. It fires a 2 lb. projectile (LD 4, DV 6.5) at 2,760 feet per second. Typical ammunition includes SAPHE (on table), AP with 6dĽ4(2) pi++; HE-AB with 6d+2 [2d] cr ex. A solid projectile is 6dĽ6 pi++. TL 6 40mm Automatic Cannon Dam 6dĽ6 pi++ Acc 5 Range 3,000/11,000 Wt. 871/57 RoF 4 Shots 8(3) ST 38M Rcl 2 $91,000 Power 0 L56 = barrel length in multiples of caliber. CE = charge energy in kJ (muzzle energy assuming optimum barrel length) LD = length to diameter ratio of projectile. DV = specific gravity of projectile. SAPHE = semi-armor piercing high explosive HE-AB = high explosive air burst Something more small-arms-ish, an attempt to reverse-engineer the larger MGs from Aliens: 10mm Machine Gun (TL9): An ultra-tech caseless “pulse rifle” weapon. It is an electrothermal-chemical 10mm L57 rifled heavy automatic (CE 10 kJ) with caseless ammunition. It fires a 0.047 lb. projectile (LD 4, DV 10) at 2,990 feet per second. It requires 10 kW (EPS 0.5 kJ). Typical ammunition is a solid (on table) or APHC with Dmg 10d(2) pi. TL9 10mm Machine Gun Dam 10d pi+ Acc 5 Range 1,400/5,900 Wt 16/13.6 RoF 15 Shots 200[5] ST 14M Rcl 2 Cost $6,700
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Is love like the bittersweet taste of marmalade on burnt toast? Last edited by David L Pulver; 03-20-2014 at 09:06 PM. |
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03-20-2014, 09:12 PM | #19 | |
Join Date: Aug 2004
Location: In the UFO
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Re: Gun Generator: v0.1
Quote:
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Is love like the bittersweet taste of marmalade on burnt toast? |
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04-17-2014, 10:09 AM | #20 |
Join Date: Nov 2006
Location: Fayetteville, Arkansas
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Re: Gun Generator: v0.1
I hope it's forgiveable to ask if the OP is still doing something with this.
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Tags |
design notes, firearms, generator, guns, ultratech |
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