Patents by Inventor Gerald C. Paynter

Gerald C. Paynter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Vortex generators for internal mixing in a turbofan engine
    Patent number: 4298089
    Abstract: Method and apparatus for reducing jet noise in a turbofan engine by causing internal mixing of fan and primary air to reduce the maximum velocity of gases at the nozzle exit plane by creating a particular type of vortex flow at a distance of at least one nozzle diameter forward of the nozzle exit plane. In one preferred embodiment for a JT8D engine an array of eight roll-top vortex generators are provided on each side of the splitter wall between fan and primary flows, and a tail cone is disposed in the primary exhaust downstream of the vortex generators.
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: November 3, 1981
    Assignee: The Boeing Company
    Inventors: Stanley F. Birch, John A. Lawler, Gerald C. Paynter
  • Vortex generators for internal mixing in a turbofan engine
    Patent number: 4175640
    Abstract: Method and apparatus for reducing jet noise in a turbofan engine by causing internal mixing of fan and primary air to reduce the maximum velocity of gases at the nozzle exit plane by creating a particular type of vortex flow at a distance of at least one nozzle diameter forward of the nozzle exit plane. In one preferred embodiment for a JT8D engine an array of eight roll-top vortex generators are provided on each side of the splitter wall between fan and primary flows, and a portion of the fan air may be introduced into the central portion or core of the hot primary air.
    Type: Grant
    Filed: December 23, 1976
    Date of Patent: November 27, 1979
    Assignee: Boeing Commercial Airplane Company
    Inventors: Stanley F. Birch, John A. Lawler, Gerald C. Paynter