11-15-2019, 06:36 PM | #31 | |
Join Date: Jun 2013
|
Re: Making Gyrocs Great
Wrote this bit before I had done the proper analysis (had just looked at the damage and thought "Meh, 1d-2 + 1d-1 is pretty lame." APHEX is actually a pretty solid option for the 4d slow gyroc, what with it having a good shot at incapacitating a target. The 1d+1 (100 yard/sec) slow gyroc is going to be rather reliant on a non-KE payload, however.
Quote:
A toned down version might be HT-4 upon being initially dosed and every 5 seconds for 1 minute. One failure causes ND (Crippling) and possibly Mute, two causes Paralysis, three causes Choking. This gives characters longer to draw and use an autoinjector (or even attack their assailant). It's no less lethal if untreated, of course, although the extended time to use an autoinjector makes it less likely to instantly kill a character. I might have failure by 5+ (and any critical failure) automatically progress two steps.
__________________
GURPS Overhaul |
|
11-16-2019, 12:38 AM | #32 | |
Join Date: Aug 2004
Location: Wellington, NZ
|
Re: Making Gyrocs Great
Quote:
__________________
Rupert Boleyn "A pessimist is an optimist with a sense of history." |
|
11-16-2019, 02:45 AM | #33 | ||
Join Date: Jul 2018
|
Re: Making Gyrocs Great
I've never been a fan of gyrojets as originally envisioned (although its hard to find alot of in-depth research on them, although I haven't checked in recent years) and like most 'rocket propelled' it can be challenging to stabilize (I've heard people suggest you would have to have some sort of guided munition just like with real life rocket assist. Fun fact: The US Military tried a 105mm rocket-propelled APFSDS - it could reach IIRC ~1500 m/s in around 700m or so, but it had accuracy issues beyond IIRC a few km. That was the start of alot of the guided KE tank gun rounds from what I read.)
Apart from the guided I suppose in some ways you might treat them like a 'recoilless' rifle (if the ports on the side angled like a muzzle brake, rather than a venturi at the back) - gyrocs actually do get a small amount of velocity I believe from the barrel although the ports lessen that. 'burn out' before leaving the barrel (or just after) may determine velocity or may be sustained for 'extended range' without velocity loss (again like real rockt-assist ammo like artillery uses.) I suspect even if unguided it would have some range (although it might be shorter than a conventional gun). I tend to prefer something akin to a travelling charge propulsion system: PARAMETERS FOR OPTIMIZING A TRAVELING CHARGE GUN SYSTEM Quote:
Quote:
EXPERIMENTAL COMPARISONS AND SENSITIVITY STUDIES Never really panned out obviously.. but then again neither did Gyrojets, liquid propellant guns or alot of other concepts lol. Last edited by Jack Sawyer; 11-16-2019 at 03:05 AM. |
||
11-16-2019, 09:27 AM | #34 | |
Join Date: Nov 2004
Location: The plutonium rich regions of Washington State
|
Re: Making Gyrocs Great
Quote:
In any event, if your rocket exhaust is some non-condensable vapor, you won't get much of a trail. Take one of those hypothetical (or merely fictional) high nitrogen fraction substances and its combustion could give you mostly nitrogen and carbon dioxide, with water below the saturation level. Ta da! No exhaust trail. Something like this could give results something like you see with Star Wars blasters - a bright streak of light (from the glowing portion of the exhaust plume) and then an explosion where it impacts. Relatively low speed rockets makes it look even cooler, with projectile speeds not much more than that of an arrow. The low accuracy of rocket rounds could explain the storm trooper's notorious inability to hit anything. Luke |
|
11-16-2019, 09:42 AM | #35 |
Join Date: Jun 2013
|
Re: Making Gyrocs Great
Traveling Charge sounds like a conventional/gyrojet hybrid. Skimming, it sounds like it uses a relatively small amount of powder to throw the bullet, and once it exits the barrel its rocket ignites for a brief time to add additional velocity without the recoil you'd get by producing that in the traditional way. If the burnout issue referenced by Rupert is a solved problem (necessary for gyrocs to continue on a ballistic trajectory once the fuel is extinguished), they'd be doable at TL9. From what I understand, however, the rocket will inherently add some instability to the bullet (and I suspect rockets deal poorly with spinning munitions, so it may have to be smoothbore), so it will probably have fairly poor Acc.
Personally, I don't see it as being particularly worth it. You've got all the problems of gyroc (bulky, relatively inaccurate round) but lose the benefit of the flatter trajectory and long range. The weapon itself would also probably be heavier to be able to handle the initial charge (the round may be lighter, if gunfoam gets better energy per unit weight than gyroc fuel, but I don't think that's a guarantee).
__________________
GURPS Overhaul |
11-16-2019, 11:01 AM | #36 |
Join Date: Jun 2006
Location: On the road again...
|
Re: Making Gyrocs Great
Are these gyroc rounds solid rockets or liquid fuel rockets?
__________________
"Life ... is an Oreo cookie." - J'onn J'onzz, 1991 "But mom, I don't wanna go back in the dungeon!" The GURPS Marvel Universe Reboot Project A-G, H-R, and S-Z, and its not-a-wiki-really web adaptation. Ranoc, a Muskets-and-Magery Renaissance Fantasy Setting |
11-16-2019, 11:21 AM | #37 |
Join Date: Feb 2016
|
Re: Making Gyrocs Great
Most likely solid fuel because of the simplicity of the designs.
|
11-16-2019, 11:31 AM | #38 |
Join Date: Feb 2005
Location: Berkeley, CA
|
Re: Making Gyrocs Great
They're something that remains shelf stable for long enough to be practical as small arms ammunition. There might be liquid propellants like that, but far more likely solid.
|
11-16-2019, 11:58 AM | #39 | |
Join Date: Aug 2007
|
Re: Making Gyrocs Great
Quote:
The very small size and short burn time of the UT gyroc also favors a solid motor. The faster you need to burn liquid fuels the more powerful a fuel pump you need.
__________________
Fred Brackin |
|
11-20-2019, 08:33 AM | #40 | |
Join Date: Nov 2016
|
Re: Making Gyrocs Great
Quote:
This sounds very nice.
__________________
- 画龍点睛。Hide。 |
|
Tags |
gyroc, ultra-tech |
|
|