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Aircraft display devices

  • US 4,626,851 A
  • Filed: 11/07/1984
  • Issued: 12/02/1986
  • Est. Priority Date: 11/09/1983
  • Status: Expired due to Fees
First Claim
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1. A display device for an aircraft comprising:

  • a circular array of radially extending selectively activatable display elements, the radially inner ends of which elements define a central space;

    within the said central space, a symbol fixed with respect to the aircraft in use; and

    means for selectively activating said display elements in accordance with aircraft attitude whereby the selected display elements form a visible pattern whose geometrical relationship with respect to said symbol is indicative of the aircraft attitude; and

    wherein said means for selectively activating said display elements activates a group of said elements which together form a sector of said circular array whose angular position in the array relative to said symbol is indicative of the roll angle of the aircraft; and

    said sector becomes progressively a larger angle sector as the aircraft pitch angle increases from zero in one direction and a smaller angle sector as the aircraft pitch angle increases from zero in the opposite direction.

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