Patents by Inventor Hua O. Wang

Hua O. Wang 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).

  • Compressor stall and surge control using airflow asymmetry measurement
    Patent number: 5915917
    Abstract: A technique for controlling compressor stall and surge is disclosed. In a gas turbine engine, static pressure asymmetry is sensed at a plurality of locations along the circumference of the compressor inlet. Time rate of change of the mass flow in the compressor is also estimated using pressure measurements in the compressor. A signal processor uses these signals to modulate a compressor bleed valve responsive to the level of flow property asymmetry, the time rate of change of the annulus average flow to enhance operability of the compressor.
    Type: Grant
    Filed: November 2, 1995
    Date of Patent: June 29, 1999
    Assignee: United Technologies Corporation
    Inventors: Kevin M. Eveker, Daniel L. Gysling, Carl N. Nett, Hua O. Wang