From: Xander Mathews <xandermathews@y...>
Date: Thu, 20 Oct 2005 14:25:19 -0700 (PDT)
Subject: [GZG] OT: Re: Grenade Launchers & Gyrojets
> Michael Robert Blair wrote: > ... where the gas is retained in the cartridge (high > pressure) and carefully bleed into the barrel (low In other words, it releases propellant? COUGHrocketCOUGH
From: B Lin <lin@r...>
Date: Thu, 20 Oct 2005 15:55:24 -0600
Subject: RE: [GZG] OT: Re: Grenade Launchers & Gyrojets
Not quite a rocket. The key difference is that the propellant (cartridge) remains in the barrel and is not carried by the round. This means that acceleration is all within the barrel and the round is fully ballistic once it leaves the barrel. In a rocket or gyrojet situation, the propellent is carried by the round and the round could continue to accelerate after it leaves the barrel. There are several recoilless rifle designs where pretty much all the propellant is burned within the rifle, but in a gyrojet type round I would think that you would want a longer burn time for higher velocities. --Binhan [quoted original message omitted]