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Sequential injection gas guns for accelerating projectiles

United States Patent

November 15, 2011
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
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.
Lacy; Jeffrey M. (Idaho Falls, ID), Chu; Henry S. (Idaho Falls, ID), Novascone; Stephen R. (Idaho Falls, ID)
Battelle Energy Alliance, LLC (Idaho Falls, ID)
12/ 269,972
November 13, 2008
GOVERNMENT RIGHTS This invention was made with government support under Contract No. DE-AC07-05-ID-14517 awarded by the United States Department of Energy. The government has certain rights in the invention.