Patents by Inventor William D. Colletti

William D. Colletti 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).

  • Fixed geometry mixer/ejector suppression system for turbofan aircraft engines
    Patent number: 5440875
    Abstract: An internal flow mixer is attached to the rearward end of a turbofan engine for inverting the engine fan and core streams. Rearwardly of the internal flow mixer is a multi-lobed exhaust nozzle which mixes ambient air with the gases flowing from the flow mixer. An ejector housing lined with acoustic absorption material receives the flow from the exhaust nozzle and discharges the thrust producing gases in noise abatement condition.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: August 15, 1995
    Assignees: United Technologies Corporation, Nordam
    Inventors: Delbert W. Torkelson, Thomas J. Jannetta, John P. Nikkanen, Daniel E. Webb, Steven H. Zysman, William D. Colletti, Alfred M. Stern, Wesley K. Lord
  • Altitude gas turbine engine test cell
    Patent number: 5396793
    Abstract: The test cell has a pressure recovery pipe (26) receiving air from the tested engine (14). Excess air is inherently induced into the pipe. A source flow path for this excess air is provided from within the pipe (36) back to the entrance the pipe passing through a perforated bulkhead (30). High local velocities of the recirculating air, resulting variable static pressures on the engine and uncertainty in the thrust measurement are avoided.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: March 14, 1995
    Assignee: United Technologies Corporation
    Inventor: William D. Colletti