Two-stage light gas gun
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United States of America Patent
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Jun 7, 2011
Grant Date -
Aug 26, 2010
app pub date -
Apr 18, 2007
filing date -
Apr 18, 2007
priority date (Note) -
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Abstract
An improved two-stage light gas gun for launching projectiles at high speeds. The gun consists of three tubes: the expansion, pump, and launch tubes. The expansion tube contains a close-fitting expansion piston that is propelled by an explosive charge. The expansion piston in turn drives the pump piston housed within the pump tube by means of a rod connecting the two pistons. The action of the pump piston adiabatically compresses and heats a light gas of hydrogen or helium, bursting a diaphragm at a predetermined pressure and expelling the projectile from the launch tube at a very high speed.
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