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METHOD OF AMPLIFYING GAS TURBINE ENGINE IN STANDBY MODE OF MULTI-ENGINE HELICOPTER AND STRUCTURE OF HELICOPTER POWER PLANT COMPRISING AT LEAST ONE GAS TURBINE ENGINE WHICH CAN BE IN STANDBY MODE
METHOD OF AMPLIFYING GAS TURBINE ENGINE IN STANDBY MODE OF MULTI-ENGINE HELICOPTER AND STRUCTURE OF HELICOPTER POWER PLANT COMPRISING AT LEAST ONE GAS TURBINE ENGINE WHICH CAN BE IN STANDBY MODE
The invention relates to an architecture of a propulsion system of a multiple-engine helicopter comprising turboshaft engines (5, 6), characterised in that it comprises: at least one hybrid turboshaft engine (5) that is capable of operating in at least one standby mode during a stable flight of the helicopter, the other turboshaft engines (6) operating alone during this stable flight; an air turbine (30) that is mechanically connected to the gas generator (17) of the hybrid turboshaft engine (5) and is suitable for rotating said gas generator (17); means for withdrawing pressurised air from the gas generator (27) of a running turboshaft engine (6); and a duct (31) for routing this withdrawn air to said air turbine (30).
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