02-16-2022, 12:53 PM | #21 | |
Join Date: Jun 2013
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Re: Tech Level news: so, you can buy a Gauss Rifle now
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The question is arguably about how much waste heat they generate. Certainly, the current prototype generates quite a bit - I believe in the video where he tested it out on the FW range (not the failed BUG match) he ended up having to wait a bit after shooting a decent number of the larger projectiles at full power, as the device was hot enough that further shooting risked damaging it - but it may well be the case that mature gauss weapons will generate less waste heat than comparable conventional weapons (which, after all, rely on a rather high-temperature reaction to propel their bullets).
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02-16-2022, 01:34 PM | #22 | |
Join Date: Aug 2007
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Re: Tech Level news: so, you can buy a Gauss Rifle now
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As to operating heat unless the barrel of the gauss weapon was hot enough to burn any unprotected hands that touched it it is already generating less waste heat.
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Fred Brackin |
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02-16-2022, 02:00 PM | #23 | |
Join Date: Jul 2008
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Re: Tech Level news: so, you can buy a Gauss Rifle now
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It's already operating at the energy per shot of a bullet that barely qualifies as a weapon. A .22 short SMG would probably get that hot eventually, but I don't know that it would within a reasonable test.
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I don't know any 3e, so there is no chance that I am talking about 3e rules by accident. Last edited by Ulzgoroth; 02-16-2022 at 02:04 PM. |
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02-16-2022, 04:30 PM | #24 | |
Join Date: Jan 2005
Location: Charlotte, North Caroline, United States of America, Earth?
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Re: Tech Level news: so, you can buy a Gauss Rifle now
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The capacitors on the other hand, I imagine they get rather hot. The maximum temperature for the PC barrel is 100C, which is rather lower than "to hot to touch" for gun, but it's also 10kg of gun, compared to something like a 2.25kg. I'm almost certain that if you had a 20kg .22 short rifle, it would not overheat terribly fast. Water is about 4kg a gallon, a Vickers .303 had about a gallon of water in it's jacket and boiled it off after about 2 minutes of sustained fire(450rpm). If you wanted to use water cooling(for some reason), it shouldn't add that much weight to a 5.56 gun, in comparison to a 10kg gun with the capability of a .22short.
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02-17-2022, 10:18 AM | #25 |
Join Date: Jun 2006
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Re: Tech Level news: so, you can buy a Gauss Rifle now
Is noise suppression even an advantage of EM launchers anyway? If you want a shot to be silent, it has to be [subsonic] which means range and damage is poor, and worse for the smaller sized projectiles people seem to want gauss weapons to fire. If you are shooting hypersonic needles, they're loud. For that matter waste energy even at the gun can emerge as sound as much as heat, so I'm not convinced even dry firing would be all that quiet.
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02-17-2022, 10:22 AM | #26 |
Join Date: Jun 2006
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Re: Tech Level news: so, you can buy a Gauss Rifle now
The magnets on the other hand.... The barrel on this thing is essentially just a guide rail right? Plays no part in the actual energy transfer, so no, it doesn't get any hotter than, say, the stock of a chemical slugthrower. The parts that are involved in the energy transfer have to be somewhere though.
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02-17-2022, 10:24 AM | #27 |
Join Date: Feb 2005
Location: Berkeley, CA
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Re: Tech Level news: so, you can buy a Gauss Rifle now
There's some advantage to suppressing the muzzle noise even if the bullet isn't silent, because while sonic boom from a bullet isn't silent, it's not coming from the direction of the gun, so it's harder to determine where the shooter is.
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02-17-2022, 10:36 AM | #28 | |
Join Date: Aug 2007
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Re: Tech Level news: so, you can buy a Gauss Rifle now
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Note that is for coil guns rather than railguns. Railguns have a big plasma arc that will probably be of the same order of magnitude as propellent gasses. Many people seem absolutely convinced that noise from gasses will be replaced by equivalent noise from something else. I see no reason thsi should be true. soem noise and some waste heat from parts conventional guns don't have? Certainly possible but not necessarily of the same order of magnitude. Just as note, I was putting the big suppressors on conventional mortars. Possibly just as silly as the Nagant "gas-seal" revolver but probably also jsut as possible.
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Fred Brackin |
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02-17-2022, 02:07 PM | #29 | |
Join Date: Jan 2005
Location: Charlotte, North Caroline, United States of America, Earth?
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Re: Tech Level news: so, you can buy a Gauss Rifle now
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1 gram of gunpowder is about 15 grains, which means a .22 short is propelled by about 700ish Joules. Given the high mass of the GR-1, it's not surprising that it doesn't heat up terribly fast, but it also doesn't eject hot brass; and the brass of the ejected cartridge in a conventional firearm carries a great deal of the heat away, and the GR-1 lacks this means of shedding waste heat. A ruger 10/22 has to absorb about 900J of waste heat in a 2.25kg platform. The GR-1 is absorbing 3100J of waste hit in a 10kg platform. So we're looking at something like 400J/kg of heat for a .22 and 310J/kg of heat for the GR-1, which places it in a comparable range in terms of overheating. These are "meatball math" numbers because there's things to deal with like the aforementioned hot brass being ejected can carrying substantial amount of heat away.
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02-17-2022, 02:48 PM | #30 | |
Join Date: Jul 2006
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Re: Tech Level news: so, you can buy a Gauss Rifle now
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