Patents by Inventor Roy Brewer

Roy Brewer 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).

  • Trim augmentation system for a rotary wing aircraft
    Patent number: 6648269
    Abstract: The flight control system includes a trim augmentation algorithm which advantageously provides two primary functions: direct augmentation of the rotor trim via on-axis stick input; and automatic cross-axis trim transfer as a function of the commanded yaw rate. In a first function of the present invention, when the aircraft is lagging the pilots commanded maneuver state the stick command is multiplied by a gain to direct the actual vehicle response toward said pilot commanded rate signal and improve the model following control laws. In a second function of the present invention, a cross-axis trim transfer function of the trim augmentation algorithm uses the commanded yaw rate to anticipate the trim change when the aircraft is rotating in winds. When a yaw maneuver is performed, the cross-axis trim transfer function automatically “stirs” the cyclic as the aircraft rotates about the yaw axis.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: November 18, 2003
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Phillip Jeremy Gold, James B. Dryfoos, Roy Brewer
  • Trim augmentation system for a rotory wing aircraft
    Publication number: 20030106958
    Abstract: The flight control system includes a trim augmentation algorithm which advantageously provides two primary functions: direct augmentation of the rotor trim via on-axis stick input; and automatic cross-axis trim transfer as a function of the commanded yaw rate. In a first function of the present invention, when the aircraft is lagging the pilots commanded maneuver state the stick command is multiplied by a gain to direct the actual vehicle response toward said pilot commanded rate signal and improve the model following control laws. In a second function of the present invention, a cross-axis trim transfer function of the trim augmentation algorithm uses the commanded yaw rate to anticipate the trim change when the aircraft is rotating in winds. When a yaw maneuver is performed, the cross-axis trim transfer function automatically “stirs” the cyclic as the aircraft rotates about the yaw axis.
    Type: Application
    Filed: December 10, 2001
    Publication date: June 12, 2003
    Inventors: Phillip Jeremy Gold, James B. Dryfoos, Roy Brewer