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Re: point of diminishing returns
Posted By: SiliconDream =PN= <querl@uclink4.berkeley.edu>Date: 2/16/01 4:33 p.m.

In Response To: point of diminishing returns (TheRoost)

: for every mass unit of gas that exits out the back of the weapon at a given
: velocity, there is a proportional amount of mass*velocity taken away from
: the velocity of the projectile. Sure you'll cut down on recoil. You could
: concievavly fire the bullet at half velocity (the other half is given to
: the gas exiting the back of the gun) with no recoil whatsoever... but then
: your pretty much rendering your weapon half as effective, and you'd be
: better off pepperspraying a full clip at full velocity anyway.

Actually, having more gas exit the back is *better* for efficiency. A larger mass has less kinetic energy, at a given momentum, than a smaller one (because kinetic energy is proportional to momentum squared, divided by mass). So a larger amount of recoil gas will carry less kinetic energy, leaving more for the bullet, which means a higher muzzle velocity.

Of course, you'd have an even higher efficiency if you *didn't* have gas vents, because then the whole gun (and the person shooting it) make up the recoil mass. But it's entirely possible to raise the efficiency of a recoilless weapon as close to 100% as you want by adding more and more recoil mass.

--SiliconDream


Message Index




Replies:

Halo weapons should not support recoilNights 2/15/01 5:58 a.m.
     To recoil, or not to recoil..Fernando. 2/15/01 8:17 a.m.
           Re: To recoil, or not to recoil..Xero 2/15/01 10:40 a.m.
                 Re: To recoil, or not to recoil..rosignol 2/15/01 11:00 a.m.
                       Re: To recoil, or not to recoil..Nights 2/15/01 2:29 p.m.
                             Re: To recoil, or not to recoil..rosignol 2/15/01 3:10 p.m.
                                   Re: To recoil, or not to recoil..mattd 2/15/01 4:07 p.m.
                                         It's not uncommon.Xero 2/15/01 6:59 p.m.
                                               Re: It's not uncommon.rosignol 2/15/01 7:17 p.m.
                                                     Here's a story for you.Tursas 2/15/01 10:02 p.m.
                                         Re: To recoil, or not to recoil..Nights 2/16/01 10:45 a.m.
                             Re: To recoil, or not to recoil..Mark Levin 2/15/01 5:52 p.m.
                                   recoilless rifles...Tursas 2/15/01 9:55 p.m.
                                         point of diminishing returnsTheRoost 2/15/01 11:51 p.m.
                                               Re: point of diminishing returnsSiliconDream =PN= 2/16/01 4:33 p.m.
                                                     firearms and physicsrosignol 2/16/01 10:54 p.m.
                                   Re: To recoil, or not to recoil..SiliconDream =PN= 2/16/01 3:53 p.m.
                       Just to nitpick ;-)Pfhreak 2/15/01 3:33 p.m.
                             Just to nitpick some more :-)Tursas 2/15/01 9:49 p.m.
                       Re: To recoil, or not to recoil..Xero 2/15/01 3:33 p.m.
                             Re: To recoil, or not to recoil..mattd 2/15/01 4:12 p.m.
                                   Re: To recoil, or not to recoil..rosignol 2/15/01 6:09 p.m.
                                   Re: To recoil, or not to recoil..(USMC)SiLvErB1rD 2/15/01 7:01 p.m.
                             Thetarosignol 2/15/01 7:39 p.m.
           Re: To recoil, or not to recoil..Gnocchi 2/19/01 6:11 a.m.
     Re: Halo weapons should not support recoilRazorback 2/15/01 12:05 p.m.
           Re: Halo weapons should not support recoilCipher 2/15/01 12:29 p.m.
                 Re: Halo weapons should not support recoilAndrew Nagy 2/15/01 2:59 p.m.
     Re: Halo weapons should not support recoilAndrew Nagy 2/15/01 2:47 p.m.
           Re: Halo weapons should not support recoilrosignol 2/15/01 3:04 p.m.
     Re: Halo weapons should not support recoilAnaphiel 2/15/01 5:08 p.m.
           Re: Halo weapons should not support recoilSpytap 2/15/01 5:39 p.m.
                 Re: Halo weapons should not support recoilNights 2/16/01 10:29 a.m.
                       Re: Halo weapons should not support recoilXero 2/16/01 10:47 a.m.
     A way to eliminate recoilfoofoohead 2/15/01 8:35 p.m.
           Re: A way to eliminate recoilNights 2/16/01 10:33 a.m.
     Not no recoil, proper recoilJex 2/16/01 12:12 p.m.
     Re: Halo weapons should not support recoilDead Glory 2/16/01 3:54 p.m.



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