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Method and device for assisting an aircraft flight control during landing approach

  • US 8,346,412 B2
  • Filed: 05/03/2006
  • Issued: 01/01/2013
  • Est. Priority Date: 05/09/2005
  • Status: Active Grant
First Claim
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1. A method of aiding the piloting of an aircraft during an approach phase for the purpose of landing, according to which method the following series of successive steps is carried out in an automatic and repetitive manner:

  • a) determining current flight conditions of the aircraft;

    b) dynamically determining a minimum approach distance between a current position of the aircraft and a position of contact with the ground at least with the aid of said current flight conditions; and

    c) presenting at least the minimum approach distance to a pilot of the aircraft on a navigation screen, wherein;

    step b) further comprises dynamically determining said minimum approach distance with the aid of said current flight conditions, as well as with the aid of a predetermined model which takes account of aerodynamic braking capabilities of the aircraft;

    step b) further comprises dynamically determining said minimum approach distance as a minimum distance between projections onto a horizontal plane of the current position of the aircraft and the position of contact with the ground, when the aircraft descends and decelerates in accordance with an optimized approach so as to achieve stabilized approach conditions, said optimized approach being dynamically determined to obtain the smallest possible minimum distance;

    step b) further comprises dynamically determining a second approach distance which corresponds to a distance between other projections onto the horizontal plane of the current position of the aircraft and another position of contact with the ground, when the aircraft descends and decelerates in accordance with a standard approach so as to achieve the stabilized approach conditions; and

    step c) further comprises simultaneously presenting the following to the pilot of the aircraft on said navigation screen;

    the minimum approach distance, in the form of a first circular arc which is centered on a position relating to the aircraft and which illustrates the position of contact with the ground relating to the optimized approach; and

    the second approach distance, in the form of a second circular arc which is centered on said position relating to the aircraft and which illustrates the other position of contact with the ground relating to the standard approach,wherein step c) further comprises presenting a symbol which illustrates a position of a landing runway scheduled for the landing and which indicates at least a threshold of the landing runway on said navigation screen, and presenting said first circular arc on a lateral trajectory of the aircraft, andwherein step c) enables the pilot to select between landing the aircraft using the optimized approach or landing the aircraft using the standard approach.

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