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Method and device for detecting degradation of performance of an aircraft

  • US 7,398,182 B2
  • Filed: 06/23/2005
  • Issued: 07/08/2008
  • Est. Priority Date: 06/28/2004
  • Status: Active Grant
First Claim
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1. A method for detecting aircraft performance degradation comprising:

  • (a) receiving the initial weight of the aircraft from an external source;

    (b) computing a current weight of the aircraft based on the received initial weight;

    (c) computing the drag of the aircraft based on the computed current weight;

    (d) computing a theoretical drag, CXth, of the aircraft based on the value of the computed drag and the square value of the computed drag(e) comparing the computed theoretical drag to a current drag of the aircraft that is computed by a different formula;

    (f) generating an indication of aircraft performance degradation based on the result of the comparison; and

    (g) outputting said indication.

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