Patents by Inventor Craig A. Hopperstad

Craig A. Hopperstad 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).

  • Patent number: 4740779
    Abstract: A panoramic display system for an aircraft comprising a display screen and line generation means for generating a line image on the display screen. The position of the line image on the display screen corresponds to the position of a projection of an artifact external to the aircraft onto an imaginary window to an eye point within the aircraft. The eye point is positioned on the opposite side of the window from the artifact. The line image may be generated by determining the position of a great circle on a sphere having its center at the eye point, such that the position of the great circle corresponds to the artifact projected onto the sphere to the eye point. The position of the line image on the display screen corresponds to the position of the great circle on the sphere. The display system may comprise a plurality of display screens positioned adjacent to one another such that each can be viewed from a single viewing point.
    Type: Grant
    Filed: April 16, 1986
    Date of Patent: April 26, 1988
    Assignee: The Boeing Company
    Inventors: Patrick J. Cleary, Arnold G. Gesell, Warren P. Stewart, Craig A. Hopperstad
  • Patent number: 4454582
    Abstract: A method and apparatus for determining the time remaining for maximum control action to be taken in order to achieve a desired objective (i.e., the chronodrasic interval) is disclosed. The method and apparatus continuously determines the amount of a parameter (e.g., runway distance) required to achieve a desired objective (e.g., stopping an aircraft before reaching the end of a runway on landing or accelerating an aircraft so that it reaches rotation speed before reaching the end of a runway on takeoff) if maximum control action is applied. The method and apparatus also continuously determines the total amount of the parameter remaining. The chronodrasic interval is then determined by deducting the amount of the parameter required to achieve the desired objective if maximum control action is taken from the total amount of the parameter remaining; and, dividing the result by a preselected (e.g., present or maximum) rate of change of the parameter.
    Type: Grant
    Filed: March 18, 1982
    Date of Patent: June 12, 1984
    Assignee: The Boeing Company
    Inventors: Patrick J. Cleary, Craig A. Hopperstad