Aerospatiale Societe Nationale Industrielle

Vincent Rivron

Cecile Vollard

Dominique Berger

The present invention relates to a process for the automatic control of the control surfaces of an aircraft for the low speed compensation of a lateral path deviation, in which beyond a given deflection threshold (20) of the deflected rudder (17), there is a control of a deflection, proportional to the exceeding of the threshold, of the wing surfaces (13, 14) of one of the two wings (18), said wing being that on the side of the deflected rudder (17), so as to provide a drag supplement to said wing and therefore yaw on the aircraft. Application to the take-off of large civil transport aircraft.

Process for the control of the control surfaces of an aircraft for the

There is proposed a method of controlling an engine aerodyne in the climb phase, wherein a velocity variation law as a function of altitude is imposed. Moreover, there is set a law of variation of the engine speed corresponding generally to progerssive decrease in such speed as altitude increases. Optimization of exploitation costs in the climb phase can be reached mainly by taking into account the engine maintenance costs by means of a wear model.

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Toulouse, France

Vincent Rivron