Safran Helicopter Engines

Jean-Julien Camille Vonfelt

Thomas Klonowski

Antoine Pascal Moutaux

Camel Serghine

Olivier Lafargue

Jean-Luc Charles Gilbert Frealle

Bertrand Nogarede

Sebastien Combebias

The invention relates to an electrical machine comprising a stator () and a rotor () designed to be rotated in relation to each other, said rotor () or said stator comprising a plurality of permanent magnets (), at least one permanent magnet comprising at least one fluid-propagation channel () extending longitudinally inside the permanent magnet, the propagation channel comprising a fluid inlet and a fluid outlet, the fluid inlet being bell-mouthed and oriented in a preferential direction of rotation of the permanent magnet.

Electrical machine of a turbomachine comprising a rotor cooled by a cooling channel

The electrical machine according to the invention is a dual machine, and comprises a first machine which can be reversed and a second machine functioning through induction between two windings. The second machine can be used for de-icing a propeller, the induction-receiving winding being mounted on the propeller shaft. The first electrical machine can function as an electrical engine to 'taxi' the aircraft. In certain embodiments, the winding mounted on the stator is common to the two machines and different magnetic flows are utilised to control them. A separate functioning of the two machines and a very good integration into the aircraft engine, with space-saving and low mass, are possible.

Aircraft turboprop engine provided with an electric machine

An electric actuator for inlet guide vanes of a gas turbine engine, the electric actuator including a fixed portion secured to a stationary portion of the engine and a movable portion that is mechanically connected to the inlet guide vanes, stationary electromagnets distributed at regular intervals around the periphery of the movable portion and fastened to the fixed portion, and movable electromagnets arranged between the stationary electromagnets, each movable electromagnet being secured on either side to first and second piezoelectric elements, the movable electromagnets and the first and second piezoelectric elements having a degree of freedom of movement relative to the movable portion and having inside faces forming a common line of contact that is tangential to the movable portion.

Device for controlling inlet guide vanes by means of a multilayer piezoelectric actuator

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Moissy-Cramayel, France

Jean-Julien Camille Vonfelt