Patents Assigned to Sierra Engineering Incorporated
  • Variable geometry nozzle with flexible side wall
    Patent number: 7062901
    Abstract: The disclosed device is directed toward a periodic combustion propulsion system. The periodic combustion propulsion system comprises at least one periodic combustion chamber configured to contain periodic combustion and at least one supersonic exhaust nozzle coupled to the at least one periodic combustion chamber. The supersonic exhaust nozzle is configured with a variable exhaust expansion ratio.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: June 20, 2006
    Assignee: Sierra Engineering Incorporated
    Inventor: Curtis William Johnson
  • Supersonic revolving nozzle
    Patent number: 6981365
    Abstract: The disclosed device is directed toward a periodic combustion propulsion system. The periodic combustion propulsion system comprises at least one periodic combustion chamber configured to contain periodic combustion and at least one supersonic exhaust nozzle coupled to the at least one periodic combustion chamber. The supersonic exhaust nozzle is configured with a variable exhaust expansion ratio.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: January 3, 2006
    Assignee: Sierra Engineering Incorporated
    Inventor: Curtis William Johnson