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METHOD AND DEVICE FOR DISPLAYING SPEED INFORMATION ON AN AIRCRAFT

  • US 20130238171A1
  • Filed: 02/12/2013
  • Published: 09/12/2013
  • Est. Priority Date: 02/13/2012
  • Status: Active Grant
First Claim
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1. A method of displaying speed information on an airplane, according to which method, in an automatic manner, in real time:

  • a current air speed of the airplane is received;

    a current acceleration value is calculated with the aid of said current air speed; and

    at least one speed trend symbol which is representative of an acceleration value received and which indicates the speed of the airplane at the end of a predetermined duration, is displayed on a speed scale represented on a viewing screen,wherein, moreover, in an automatic manner and in real time;

    a monitoring is carried out so as to be able to identify each of the following situations;

    the airplane is controlled so as to fly according to a constant speed and the airplane is controlled so as to fly according to a constant Mach number;

    a corrected value of the acceleration value is calculated, which is such that the corresponding speed trend symbol becomes zero when the Mach number of the airplane does not vary; and

    the following are transmitted to said viewing screen for display thereof in the form of a speed trend symbol;

    said current acceleration value, when the airplane is controlled so as to fly according to a constant speed; and

    said corrected value, when the airplane is controlled so as to fly according to a constant Mach number.

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