Method and system for controlling the decelerated approach of an

Details Method and system for controlling the decelerated approach of an Method and system for controlling the decelerated approach of an

1977-11-10

1980-11-11

Eisenzopf, Reinhard J.

Aeronautics and astronautics

Aircraft control

Automatic

244186, 364430, G05D 100, G05D 112

Patent

active

042328390

ABSTRACT:
A method for controlling the decelerated approach of an aerodyne on radioignment generally referred to as "glide," in particular for the purpose of reducing its fuel consumption and reducing the noise, mainly in the final stage of the approach, by approaching the glide at high speed, initiating the descent according to the glide angle, also at high speed then beginning a decelerated phase in order to reach a predetermined speed V sel+k, k being generally equal to 10 knots, on reaching a predetermined altitude, h.sub.F, and then passing progessively from the speed V sel+k to the speed V sel. From the time when the aerodyne reaches the axis of the glide path, a course is determined in two sections, as regards the variables of speed and altitude, for reaching the point situated at the altitude h.sub.F at the given speed V sel+k, namely a first section, at the beginning of which the aerodyne which was previously travelling along the glide, begins a first braking stage, the speed of the aerodyne, during this first section, bein reduced by at least a predetermined speed .DELTA.V.sub.1, and a second section, at the beginning of which the aerodyne initiates a second braking stage, the gradient dv/dh along these two sections having to satisfy the relationship

REFERENCES:
patent: 3786505 (1974-01-01), Rennie
patent: 3868497 (1975-02-01), Vietor
patent: 4042197 (1977-08-01), Boyle
patent: 4050096 (1977-09-01), Bennett et al.
Motorola, m6800 Microcessor Application Manual, 1975.

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