Patent ID: 6981365
Filing Date: 2006-01-03
Classification: F02K

Abstract:
1. A periodic combustion propulsion system comprising: at least one periodic combustion chamber configured to contain periodic combustion; at least one supersonic exhaust nozzle coupled to said at least one periodic combustion chamber, said at least one supersonic exhaust nozzle configured with a physical exit area that varies in a circumferential direction to provide a variable exhaust expansion ratio; and a second periodic combustion chamber adjacent said at least one periodic combustion chamber, said second periodic combustion chamber having exhaust, said at least one periodic combustion chamber having a supersonic exhaust flow, said exhaust of said second periodic combustion chamber limits expansion of said supersonic exhaust flow of said at least one periodic combustion chamber, wherein said at least one supersonic exhaust nozzle is fluidly coupled in sequence to said at least one periodic exhaust chamber and said second periodic exhaust chamber.