Patent ID: 7093774

Claim:
A device ( 1 , 100 ) for injecting a pulsed supersonic gas flux, characterized it includes a first chamber ( 2 ) inside which the gas to be injected is found under pressure on either side of a free piston ( 4 ), the device ( 1 , 100 ) comprising means ( 12 ) for setting this free piston into motion, connected to said first chamber ( 2 ) and capable of causing propulsion of the free piston ( 4 ), said device ( 1 , 100 ) further including a supersonic nozzle ( 6 ) for ejecting the gas, capable of communicating with the first chamber ( 2 ) via an aperture ( 8 ) provided in this first chamber ( 2 ), and also including a valve ( 10 ) closing up said aperture ( 8 ) and able to be actuated by percussion of the free piston ( 4 ).