Patents by Inventor Lloyd L. Roberts

Lloyd L. Roberts 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).

  • Aircraft speed command system
    Patent number: 4044975
    Abstract: A system for displaying to the pilot an indication to enable him to fly to a desired air speed and angle of attack, especially on takeoff. An artificial angle of attack error signal is generated from actual and desired air speeds and corrected by adding to it a differentiated pitch signal. The resultant calculated angle of attack error is displayed to the pilot unless flying to that indication would result in exceeding the actual maximum or minimum angle of attack limits, in which case an indication based on the actual exceeded limit is displayed.
    Type: Grant
    Filed: May 17, 1976
    Date of Patent: August 30, 1977
    Assignee: McDonnell Douglas Corporation
    Inventors: Frederick C. Blechen, Lloyd L. Roberts