Patent ID: 7853370

Claim:
A method of estimating the touchdown point of the wheels of an aircraft having brakes, airbrakes and reverse thrusters on a landing runway and the distance to be travelled by the aircraft on the runway from the touchdown point to reach a controlled speed below which it can perform any maneuver on the ground, which comprising the following steps: first estimating, in-flight, a height and a speed of passage above the threshold of the runway; second estimating, in-flight, the touchdown point of the wheels of the aircraft on the landing runway and a distance to be ravelled to reach the controlled speed, on the basis of the estimation of the height and the speed of passage above the threshold of the runway; third estimating while going on the runway, the distance to be travelled from the real touchdown point to reach the controlled speed, taking account of the braking forces provided by the brakes, the airbrakes and the thrust reversers.