Messier-bugatti-dowty

Safran Landing Systems

Albert De Pindray

Nicolas Keller

Edouard Campbell

Dominique Ducos

Sebastien Dubois

Sébastien Dubois

An electromechanical actuator comprising an electric motor () for driving an output shaft () in rotation via a reduction gear () and passive regulation stage () allowing for control of the speed of rotation of the output shaft. A braking member is arranged between an output of the reduction gear and the output shaft to be driven, the braking member being arranged to ensure two different braking levels depending on the direction of rotation of the shaft. The braking member is of hydraulic type and comprises a paddle () for transferring fluid between two chambers () under the effect of the rotation of the output shaft, transferred fluid passing through a selective drawing member () which, depending on the direction of rotation of the actuator, opposes two distinct resistances to the decantation of the fluid from one chamber to the other.

Hydraulically regulated electromagnetic actuator, and landing gear fitted with such an actuator for controlling same

A method of operating an aircraft landing gear between a deployed position and a retracted position. The landing gear comprises a leg hinged to the aircraft, the leg being stabilized in the deployed position by a folding strut comprising two hinged-together links, the strut being held in an aligned position by a stabilizer member comprising two hinged-together links themselves held in alignment by a locking member. The method comprises the steps of arranging the strut () and the stabilizer member () in such a manner that at least one of the links () of the stabilizer member moves continuously during a movement of the leg from the deployed position to the retracted position, and of attaching an operating actuator () to the link in order to cause the link to pivot against the locking member and to exert thereon a force tending to move the leg.

Method for operating a landing gear assembly with a breaker strut

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Magny, France

Albert De Pindray