Messier-Bugatti-Dowty

Safran Helicopter Engines

Safran Landing Systems

Messier-Bugatti Inc.

Florent Nierlich

Julien Thibault

Antoine Pascal Moutaux

Jean-Pierre Garcia

Daniel Bucheton

Hervé Charuel

Francois-Noel Leynaert

Etienne Annee

Raphael Pierra

François-Noël Leynaert

Raphaël Pierra

Olivier Gosselin

An actuating system for an aircraft having an electromechanical actuator () comprising a non-volatile memory () wherein stored data () including configuration data () specific to the electromechanical actuator is stored. The system also includes a control unit () using the configuration data to implement a servo-control loop, the output signal of which is a digital signal controlling the electric motor of the electromechanical actuator and at least one digital transmission channel () connecting the control unit and the electromechanical actuator.

Field of electric actuating systems aboard aircrafts

An electromechanical actuator comprising an actuator member and an electric motor () adapted to drive the actuator member. The electric motor () comprises a rotor portion (), a stator portion () comprising a yoke-forming body () and a set of coils received in slots () in the body (), and at least one electrical module (). The electrical module is adapted to generate an electrical power supply current (Ia) for the electric motor (), which current flows in the set of coils. The electrical module () is carried by the body ().

Electromechanical actuator

A method for powering an autonomous drive device () in an aircraft comprising a certain number of drive motors () for the wheels () when the jet engines of the aircraft are not activated, the aircraft comprising an auxiliary power unit or APU () driving a first generator () for supplying power to devices on the aircraft that need to be powered when the jet engines are not activated. The method comprises the use of a second generator () dedicated to the power supply of the autonomous drive device, the second generator being disposed in parallel with the first generator so as to be driven by the APU and, when it operates as a motor under the action of power recovered by the autonomous drive device, so as to help the APU drive at least the first generator.

Method for powering autonomous drive motors for an aircraft

The invention provides an emergency power network for aircraft, for powering actuator motors () connected to the network, the network comprising a power bus () adapted to convey three-phase AC power generated by at least one DC/AC converter () that is powered by a DC source of the aircraft, the converter being fitted with modulator means for modulating the voltage and/or the frequency of the three-phase power generated thereby.

Control network for single- or multi-motor actuators, the network being particularly adapted to aviation applications such as powering the motors of landing-gear hook units

A braking actuator for a brake of an aircraft, the actuator comprising: The motor has first and second exciters adapted to move the movable portion of the motor and adapted to be powered independently from each other. The transmitter member of the position sensor comprises first and second transmitters adapted to be powered independently, and the receiver member generates the signal representative of position on being excited by at least one of the transmitters.

Electromechanical actuator with dual excitation

The invention relates to a device for braking/driving an aircraft wheel mounted to rotate on an undercarriage axle, the device comprising: a stack of disks comprising disks that are constrained in rotation with the wheel and that alternate with disks that are constrained in rotation with a torsion tube; a support member mounted to rotate on the axle and constrained in rotation with the torsion tube; braking actuators carried by the support member for selectively pressing the disks together; and a drive member for selectively driving the support member in rotation; the support member carrying a secondary of a transformer having a primary arranged facing the support member while being stationary in rotation, the secondary being electrically connected to the actuators and the primary being adapted to being connected to a non-DC voltage source.

Device for braking/driving an aircraft wheel

The invention provides an aircraft wheel-and-brake set, the wheel including a rim mounted to rotate on an axle of the aircraft about an axis of rotation, and the brake including a stack of disks extending into the rim in service, and a support carrying brake actuators facing the stack of disks in order to selectively press said disks together, wherein the support carries at least one rotary drive member for driving the wheel in rotation, which drive member is carried in such a manner that it extends outside said wheel.

Aircraft wheel-and-brake set fitted with a rotary drive device

The invention relates to a power distribution architecture for an aircraft for powering aircraft electromechanical actuators, the architecture comprising at least one power distribution member for distributing power to such and such an electromechanical actuator connected to the architecture, the architecture receiving power from at least one power supply bus of the aircraft. According to the invention, a DC network of voltage that is variable in controlled manner is interposed between the power supply bus of the aircraft and the power distribution members.

Power distribution architecture for distributing power to electromechanical actuators of an aircraft

The invention relates to a method of managing an electromechanical brake actuator comprising an electric motor adapted to move a pusher against a stack of disks to apply a braking force to the stack of disks, selectively, the method comprising the step of causing the actuator to operate in a given operating domain in the current/speed plane in such a manner that the operating domain is selected to present a boundary having a portion that extends substantially along a constant power curve plotted in the current/speed plane.

Growing community of inventors

La Garenne Colombes, France

Florent Nierlich