Sequential injection gas guns for accelerating projectiles

Details Sequential injection gas guns for accelerating projectiles Sequential injection gas guns for accelerating projectiles

2008-11-13

2011-11-15

Klein, Gabriel (Department: 3641)

Ordnance

Accelerating

C124S073000

Reexamination Certificate

active

08056462

ABSTRACT:
Gas guns and methods for accelerating projectiles through such gas guns are described. More particularly, gas guns having a first injection port located proximate a breech end of a barrel and a second injection port located longitudinally between the first injection port and a muzzle end of the barrel are described. Additionally, modular gas guns that include a plurality of modules are described, wherein each module may include a barrel segment having one or more longitudinally spaced injection ports. Also, methods of accelerating a projectile through a gas gun, such as injecting a first pressurized gas into a barrel through a first injection port to accelerate the projectile and propel the projectile down the barrel past a second injection port and injecting a second pressurized gas into the barrel through the second injection port after passage of the projectile and to further accelerate the projectile are described.

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Linhart et al., “Theory of a multistage light gas gun,” Acta Astronautica 61 (2007) 617-625.

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