Could a weapon still work properly and for long periods if there was a certain amount of oxygen in the air?
Say there was double the amount of oxygen in the air than what there was theorized back in the age of the dinosaurs.
I assume it would be similar to pic related where the explosive force behind the gun was too powerful.
>>30326892
Now, im no expert. But its my knowledge that firearms contain their own propellant in the cartridge themselves. so technically if you could keep one sealed. itd work in space. after you figured out how to keep a barrel from exploding in vacuum because of the lack of external pressure.
>>30326892
I don't believe this would be an issue, unless you were using a blackpowder firearm.
You might have increased rust issues.
>>30326892
Muzzle flashes would be bigger and carbon fouling might decrease since more powder would combust completely. Not sure if metals in the gun would see adverse effects from potentially getting briefly super-heated in a pure oxygen environment (metals will burn if its hot or oxygenated enough).
I have no idea what you're asking.
But the amount of oxygen in the air has no effect on how powerful gunshots are.
>>30326892
It wouldn't do anything until the bullet already left the barrel
At that point the muzzle blast would get hella big
>>30326892
Gunshots do not use atmospheric oxygen at all, just the oxidizer contained in the propellant, it would have no effect whatsoever except for maybe a more pronounced muzzle flash.
Until the bullet leaves the barrel, the combustion occurs in what is basically a sealed environment made up by the casing and the expanding space behind the bullet. Atmospheric oxygen never really gets a chance to enter the equation at any point.
>>30327779
>shoot BP gun in 100% oxygen environment at normal atmospheric pressure
>sparks fly during the shot and land on clothing
>clothing catches on fire
>burning clothing sticks to skin and melts skin/fat
>you catch on fire
>your burning fat ignites the gun stock
>you and the gun burn to ashes
>>30326892
Not sure if trolling or not, but all the oxygen required to complete the change from powder to gas is contained in the powder itself, in both smokeless and black powder varieties. In fact, more oxygen is created as a net result than is used to complete the reaction.
I don't know why people think the amount of oxygen outside influences how gunpowder works. Do they think that during a massive fire fight inside, everyone asphyxiates due to lack of oxygen because of all the consumption?
>>30327403
This guy is mostly right. Only atmospheric pressure isn't really that powerful, gun barrels are designed to handle some pretty ridiculous pressure changes.
Think of it in terms of gauge pressure (absolute pressure - exterior/atmospheric pressure) and less than 15 psi difference seems rather insignificant. You can greater pressure differences between shots. And I imagine the small about of ambient oxygen missing from the chamber or cylinder in the vacuum of space would reduce the barrel interior pressure so that it'd be comparable in gauge pressure to an atmospheric shot.
Cycling is another matter entirely though but TL;DR Must guns would pretty much work fine in space
>>30327948
>>30327403
>>30327779
>>30327840
Both smokeless and black powders contain their own oxidizer. There isn't any way for atmospheric air to interact with the gunpowder anyway because the cartridge seals the breech, and the bullet seals the bore until it leaves. The pressure inside the bore is over 25,000 psi so atmospheric oxygen isn't getting inside the barrel until long after all of the propellant that will burn has done so.
Firing in a vacuum isn't a big deal. The firearm contains anywhere from 25,000 to 75,000 psi of hot expanding gas, the missing 15 from lack of atmosphere on the outside of the gun is irrelevant.
Rust will accelerate in any high oxygen environment. You will need to use better coatings or stainless. Even then, some "stainless" steels can rust terribly in environments with significantly more oxygen than we have nao.
>>30326892
Yes
>>30327918
>doing anything involving fire with 100% oxygen
>being anywhere near 100% oxygen
100% oxygen out of a mask will singe your fucking facial hair you literally could not offer me enough money to go into that kind of environment.
>>30326892
Gunpowder contains oxidizer you retard.
>>30327403
Mostly right. Your problem firing in the vacuum of space is that there's no way to cool it. 99% of all guns are air cooled. At best you'll get a couple rounds off (depending on the firearm in question) before it seizes up, cooks off then seizes up, or just explodes.
>>30327403
>after you figured out how to keep a barrel from exploding in vacuum because of the lack of external pressure.
Pressure difference between a 5.56mm chamber and atmosphere - 62000 PSI
Pressure difference between a 5.56mm chamber and a vacuum - 62014.7 PSI
Hmm, you know, I think we might be able to account for 14.7 PSI difference.
WHY ARE WE NOT TESTING THESE THINGS?!?
>>30326892
Firearms would not be effected in a prehistoric earth atmosphere but internal combustion engines would be fucked.
>>30330148
>a couple rounds off
Maybe if by a couple you mean at least a hundred.
If rapid fire without allowing the gun to cool was anywhere near as quick to take said gun out of action, nobody would probably have even bothered with designing semi-autos.
In reality, air cooling (unlike water cooling) doesn't even come into play during rapid fire, the gun is heating up orders of magnitude faster than air can possibly cool it. You dump a couple of mags and then let the gun cool. Same thing would happen in vacuum, except the cooling period would have to be much, much longer...
>there's no way to cool it
...there is. The heat radiates away. Granted, it's much less effective than conduction.
>>30330569
You might even be able to have liquid cooling and hook it up to your suit's cooling system.
>>30327403
>Vacuum of space
>A significant pressure difference to what normally happens in the barrel of a fucking gun.
Your guns work fine in space. Even overheating isn't going to be that big of a deal unless you're going full retard and don't make some sort of cooling jacket for it.
All ordinary explosives contain their own oxidizers. There's a special name for the class that don't - fuel-air explosives aka thermobarics.
>>30330527
uh, you just adjust the fuel to air ratio and youd be fine
>>30330703
Ok so the team of /k/commandos that go back to the Cambrian period are gonna do mechanics work in the jungle while tyranasaurus rex and megalodons are running at them? That's autistic as fuck kiddo.
>>30330867
>not adjusting the fuel/air mix beforehand
>T. rex or Megalodon being around in the Cambrian period
Cambrian is the wrong period anyway. Only 63% of today's oxygen content, according to sources.
>>30330867
>autistic as fuck
Yes, that's a fitting description for your post.
>>30326892
Pure oxygen is highly flammable.
>>30326892
All the oxygen the bullet needs is stored inside its shell. Hence why guns can fire underwater.
Now delete this stupid thread, you ignorant tea n crumpet sucking piece of shit
