DEVICE FOR ASSISTING A SOLID PROPELLANT PROPULSION SYSTEM OF A SINGLE-ENGINE HELICOPTER, SINGLE-ENGINE HELICOPTER COMPRISING SUCH A DEVICE

摘要

The invention relates to a device for assisting a propulsion system of a single-engine helicopter, comprising an engine connected to a power transmission gearbox (15) suitable for rotating a rotor (88) of the helicopter, characterised in that it comprises: a turbine (18) for driving in rotation an output shaft (34) that is mechanically connected to said power transmission gearbox (15); and controlled means (16) for supplying said drive turbine (18) with pressurised fluid in order to allow said turbine (18) to transform the power from said pressurised fluid into mechanical power for rotating said output shaft (34).

主权项

1. A device for assisting a propulsion system of a single-engine helicopter, comprising an engine connected to a power transmission gearbox suitable for rotating a rotor of the helicopter, said engine comprising a gas generator, a free turbine connected to the gas generator, a speed reduction gearbox and a free wheel, referred to as a power free wheel, connected to said power transmission gearbox, said assistance device comprising:
a turbine for driving in rotation an output shaft suitable for being mechanically connected to said power transmission gearbox, controlled means for supplying said drive turbine with pressurised fluid in order to allow said turbine to transform the energy from said pressurised fluid into mechanical power for rotating said output shaft,wherein said assistance device further comprises a free wheel suitable for being arranged between said output shaft of said drive turbine and said power transmission gearbox in one of the following configurations:
a configuration in which it is directly connected to said power transmission gearbox, a configuration in which it is directly connected to a shaft arranged between said power free wheel of said turboshaft engine and said power transmission gearbox, a configuration in which it is directly connected to a shaft arranged between said speed reduction gearbox of said turboshaft engine and said power free wheel of said turboshaft engine, a configuration in which it is directly connected to a shaft arranged between said free turbine and said speed reduction gearbox of said turboshaft engine.