Patents by Inventor Darrell C. Mays

Darrell C. Mays 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).

  • Method and system for turbomachinery surge detection
    Patent number: 6823254
    Abstract: A method and system for surge detection within a gas turbine engine, comprises: measuring the compressor discharge pressure (CDP) of the gas turbine over a period of time; determining a time derivative (CDPD ) of the measured (CDP) correcting the CDPD for altitude, (CDPDCOR); estimating a short-term average of CDPDCOR2; estimating a short-term average of CDPDCOR; and determining a short-term variance of corrected CDP rate of change (CDProc) based upon the short-term average of CDPDCOR and the short-term average of CDPDCOR2. The method and system then compares the short-term variance of corrected CDP rate of change with a pre-determined threshold (CDPproc) and signals an output when CDProc>CDPproc. The method and system provides a signal of a surge within the gas turbine engine when CDProc remains>CDPproc for pre-determined period of time.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: November 23, 2004
    Assignee: Honeywell International, Inc.
    Inventors: David K. Faymon, Darrell C. Mays, Yufei Xiong
  • METHOD AND SYSTEM FOR TURBOMACHINERY SURGE DETECTION
    Publication number: 20040193355
    Abstract: A method and system for surge detection within a gas turbine engine, comprises: measuring the compressor discharge pressure (CDP) of the gas turbine over a period of time; determining a time derivative (CDPD) of the measured (CDP); correcting the CDPD for altitude, (CDPDCOR); estimating a short-term average of CDPDCOR2; estimating a short-term average of CDPDCOR; and determining a short-term variance of corrected CDP rate of change (CDProc) based upon the short-term average of CDPDCOR and the short-term average of CDPDCOR2. The method and system then compares the short-term variance of corrected CDP rate of change with a pre-determined threshold (CDPproc) and signals an output when CDProc>CDPproc. The method and system provides a signal of a surge within the gas turbine engine when CDProc remains >CDPproc for pre-determined period of time.
    Type: Application
    Filed: March 28, 2003
    Publication date: September 30, 2004
    Applicant: Honeywell International Inc.
    Inventors: David K. Faymon, Darrell C. Mays, Yufei Xiong