Patents by Inventor Ray W. Carmichael

Ray W. Carmichael 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).

  • Variable area fan nozzle fan flutter management system
    Patent number: 9074531
    Abstract: A gas turbine engine includes a controller that controls a fan blade flutter characteristic through control of a variable area fan nozzle.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: July 7, 2015
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Zbigniew M. Grabowski, Robert J. Morris, Ray W. Carmichael
  • VARIABLE AREA FAN NOZZLE FAN FLUTTER MANAGEMENT SYSTEM
    Publication number: 20120124965
    Abstract: A gas turbine engine includes a controller that controls a fan blade flutter characteristic through control of a variable area fan nozzle.
    Type: Application
    Filed: January 31, 2012
    Publication date: May 24, 2012
    Inventors: Zbigniew M. Grabowski, Robert J. Morris, Ray W. Carmichael
  • CONTROLLING THE AERODYNAMIC DRAG OF A GAS TURBINE ENGINE DURING A SHUTDOWN STATE
    Publication number: 20100089030
    Abstract: A gas turbine engine system includes a gas turbine engine (10) having aerodynamic drag that retards movement. The gas turbine engine has an active state and a shutdown state. A fan bypass passage (30) associated with the gas turbine engine conveys a bypass airflow (D) that influences the aerodynamic drag. A nozzle (40) associated with the fan bypass passage has a plurality of different positions that influences the bypass air flow to thereby influence the aerodynamic drag. The nozzle is operative to move between the plurality of different positions in response to the shutdown state to control the aerodynamic drag.
    Type: Application
    Filed: October 12, 2006
    Publication date: April 15, 2010
    Inventor: Ray W. Carmichael