Safran Helicopter Engines

Stéphane Albert André Douillard

Fabien Mercier-Calvairac

Romain Jean Gilbert Thiriet

Fabien Mercier-calvairac

Propulsion system for a helicopter comprising a main engine, a main rotor, a main gearbox including an output mechanically connected to the main rotor, a reduction gearbox mechanically coupled between the main engine and a first input of the main gearbox, and an assistance device. The assistance device comprises a first electric machine mechanically coupled to the reduction gearbox and configured to operate as an electric generator to take off energy produced by the main engine, and a second electric machine mechanically coupled to a second input of the main gearbox, the second electric machine being supplied with electrical power by the first electric machine and configured to operate as an electric motor to deliver additional mechanical power to the main gearbox.

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Moissy-Cramayel, France

Stéphane Albert André Douillard