Patents by Inventor Murray L. Dubin

Murray L. Dubin 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 to increase stall margin
    Patent number: 5259188
    Abstract: A method and system are provided to bias a control subsystem of a gas turbine engine having a fan and compressor. The method includes the steps of measuring an operating parameter of the engine and differentiating this parameter over time to obtain a derivative thereof. A bias signal is generated in a predetermined bias schedule in response to the parameter derivative, and provided to the control subsystem for biasing the subsystem. The bias signal has a zero value for values of the parameter derivative from zero to a first value thereof at a first time. The bias signal has a maximum value for values of the parameter derivative between second and third values thereof corresponding with second and third times. And, the bias signal returns to a value of zero after a fourth time greater than the third time.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: November 9, 1993
    Assignee: General Electric Company
    Inventors: Thomas A. Baxter, Murray L. Dubin, James A. Huffman, Dominic Stasio
  • Method and apparatus for detecting stalls
    Patent number: 5012637
    Abstract: A gas turbine engine control system which receives an engine condition and generates a parameter signal representative of the condition. The control system also receives a temperature signal representative of the engine temperature downstream of the engine combustor. A comparator is used to compare the parameter signal with the temperature signal and a nonrecoverable stall output signal is produced when the temperature signal indicates the temperature is greater than a scheduled value for the given parameter signal. The invention also includes a method for monitoring a gas turbine engine comprising the steps of receiving an engine condition and for generating a parameter signal representative of the condition.
    Type: Grant
    Filed: April 13, 1989
    Date of Patent: May 7, 1991
    Assignee: General Electric Company
    Inventors: Murray L. Dubin, Linda J. Smith
  • Method and apparatus for detecting stalls
    Patent number: RE34388
    Abstract: A gas turbine engine control system which receives an engine condition and generates a parameter signal representative of the condition. The control system also receives a temperature signal representative of the engine temperature downstream of the engine combustor. A comparator is used to compare the parameter signal with the temperature signal and a nonrecoverable stall output signal is produced when the temperature signal indicates the temperature is greater than a scheduled value for the given parameter signal. The invention also includes a method for monitoring a gas turbine engine comprising the steps of receiving an engine condition and for generating a parameter signal representative of the condition.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: September 28, 1993
    Assignee: General Electric Company
    Inventors: Murray L. Dubin, Linda J. Smith