Deathbunny
"Mostly Harmless."
Registered: Oct 2001
Location: Phoenix, Arizona, USA
Posts: 1416 |
OK...
A supressor slows and controls the expansion of the gases produced by the propellent, reducing their velocity and dissipating their energy against the gases and the elements of the suppressor.
A hermetically sealed spacecraft would either be over or under the standard pressure (which might either increase or decrease the suppressor's efficiency while either increasing or decreasing the risk of a catastrophic failure of the supressor/weapon or decreasing it...)
Air, unlike most hydraulic systems like water and oil, has quite a lot of compressability depending on the starting pressure and the displacement of the airmass/room/chamber.
So...
In a small, overpressured room you'll probably get a mosr effective sound suppressor by a tiny bit as the increased friction/resistance of the denser air retards the bullet's velocity and the gases while risking increased pressures inside the weapon.
With the P90 being a spring-resisted blowback design, you might risk harder wear, an increased rate of fire, potentially more severe recoil, and possibly a catastrophic failure of the recoil springs.
In a larger displacement area, the compressability of the air would probably mitigate most of the pressure problems, possibly only increasing the effectiveness of the suppressor (as listed) and maybe a little more wear and tear.
In a larger lower pressure area, the report would probably be louder because the decreased resistance on the bullet decreases the amount of time availible for the exhaust gases to be diverted into the suppressor and then slowed resulting in the gases escaping faster than normal situations permit.
Muzzle velocities would also be higher in the less dense air, potentially allowing a high subsonic round to slip out a bit faster and make a nice sonic crack...
After the shooting, in a close-in space (assuming all this time that it's not a high O2 environment that caught afire when you started shooting...), yuo'll have to deal with some of the bi=products of the propellents in the air (Carbon-compounds, sulphur compounds, others...) until whatever cleans the air does.
(As long as it isn't some of the cheap AK rounds that smell like sh**... *smirk*)
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- Deathbunny
"Truth requires no belief and Belief requires no truth."
"Our actions support our beliefs, but without our beliefs, we have no justification for our actions." - J. Wheeler
"Everything has its own place and function. That applies to people, although many don't seem to realize it, stuck as they are in the wrong job, the wrong marriage, or the wrong house. When you know and respect your Inner Nature, you know where you belong. You also know where you don't belong." -From "The Tao of Pooh"
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