From: Ryan M Gill (rmgill@mindspring.com)
Date: Tue Oct 01 2002 - 11:45:27 PDT
At 2:08 PM -0400 10/1/02, J. Forster wrote:
>In looking at various tank pics, a friend asked me what the bulge
>often seen in
>the middle of tank main gun barrels is for. My only guess is to break up some
>vibration mode. It's not the flash arrestor, I think.
Essentially what it does is act as a reservoir for pressurized
propellant gasses. Once the projectile clears the barrel, the bore
evacuator can de-pressurize and in doing so, based on the angle of
the openings from the chamber, blows spent propellant gases up the
barrel.
See http://lightcraft.meche.rpi.edu/Research/bedescription.html
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