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Flight control system with synthetic inertial glideslope deviation and method of use

  • US 10,203,693 B2
  • Filed: 11/01/2016
  • Issued: 02/12/2019
  • Est. Priority Date: 11/01/2016
  • Status: Active Grant
First Claim
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1. A flight control module for computing glideslope deviation during landing of an aircraft, comprising:

  • a communication interface coupled to a radar altimeter and configured to receive;

    first and second glideslope deviation signals indicative of respective glideslope deviations computed based on a glideslope transmission received by said aircraft,an altitude of said aircraft measured by the radar altimeter, andinertial data for said aircraft;

    a processor coupled to said communication interface and configured to compute an inertial glideslope deviation based on the inertial data when the altitude falls below a predetermined threshold; and

    a signal selection fault detection (SSFD) module configured to select one glideslope deviation from among the respective glideslope deviations when said aircraft is operating above the predetermined threshold, and from among the respective glideslope deviations and the inertial glideslope deviation when said aircraft is operating below the predetermined threshold, wherein the selected glideslope deviation is for use in controlling an automated landing system of said aircraft.

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