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AssigneeSociete Francaise d'Equipements pour la Navigation Aerienne (S.F.E.N.A.)
InventorsJean-Luc Sicre, Daniel Gruaz
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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 P.sub.32 =k P.sub.1 P.sub.1 and P.sub.2 being the respective gradients on each of the two sections and k being a value determined experimentally.
A method of controlling the decelerated approach of an aircraft on glide radioalignment, said aircraft having equipment comprising at least one landing gear which can take the positions gear retracted and gear down, at least one control surface such as a flap which can take at least three positions, flap in final position for landing, flap at one notch from the final position for landing, and flap at two notches from the final position for landing, and a throttle having a slow position, comprising the following steps:
A method of controlling the decelerated approach of an aircraft on glide radioalignment, said aircraft having equipment comprising at least one landing gear which can take the positions gear retracted and gear down, at least one control surface such as a flap having at least three positions, flap in final position for landing, flap at one notch from the final position for landing, and flap at two notches from the final position for landing and a throttle having a slow position, comprising the following steps:
A method of controlling the decelerated approach of an aircraft on glide radioalignment, said aircraft having equipment comprising at least one landing gear which can take the positions gear retracted, and gear down, at least one control surface such as a flap which can take at least three positions, flap in final position for landing, flap at one notch from the final position for landing, and flap at two notches from the final position for landing, and a throttle having a slow position, comprising the following steps:
A method for controlling the decelerated approach of an aircraft on glide, said aircraft having equipment comprising at least one landing gear which can take the positions gear retracted and gear down, at least one control surface such as a flap which can take at least three positions, flap in final position for landing, flap in one notch from the final position for landing, and flap at two notches from the final position for landing, and a throttle comprising a slow position, comprising at least the following steps:
Dependencies are inferred from the claim text.