Dynamics of Flash Tube Seals in 30-mm Ammunition

Report No. ARL-TR-3211
Authors: Stephen L. Howard
Date/Pages: May 2004; 22 pages
Abstract: Certain 30-mm ammunition use a flash tube to augment the primer and to provide an ignition source for the propellant. The flash tube must provide abundant hot gases/particles and pressurize the propellant bed sufficiently so that the initial burn rate of the propellant is high enough to propel the projectile to the muzzle within the few milliseconds that constitute the action time of the cannon. Rupture of the seal at differing rupture pressures was shown to affect the initial pressure in the chamber enclosing the propellant bed, as well as the amount of burning particles released into the bed.
Distribution: Approved for public release
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Last Update / Reviewed: May 1, 2004