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Method, apparatus and computer program product for estimating airplane attitude with reduced sensor set

  • US 6,473,676 B2
  • Filed: 12/22/2000
  • Issued: 10/29/2002
  • Est. Priority Date: 12/22/1999
  • Status: Expired due to Fees
First Claim
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1. A system for supplying the pilot of an aircraft with an alternative source of aircraft attitude information comprising:

  • a plurality of sensors including;

    a first sensor useful for sensing aircraft linear acceleration in a vertical direction;

    a second sensor useful for sensing an airspeed of the aircraft;

    a third sensor useful for sensing a roll rate and yaw rate of the aircraft and oriented on an inclined axis;

    a fourth sensor useful for sensing a magnetic heading of the aircraft;

    a signal processor, having an input coupled to said suite of sensors, and including;

    a pitch angle estimator;

    a roll angle estimator;

    a heading angle estimator; and

    an output; and

    a display for displaying an angle estimation output from said signal processor to the pilot.

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