TURBOSHAFT ENGINE TWIN-ENGINE HELICOPTER EQUIPPED WITH SUCH A TURBOSHAFT ENGINE AND METHOD FOR OPTIMISING THE ZERO-POWER SUPER-IDLE SPEED OF SUCH A TWIN-ENGINE HELICOPTER

摘要

Turboshaft engines, twin engine helicopters having such turboshaft engines, and methods for optimizing unpowered super idle speeds of such twin engine helicopters The present invention relates to a turboshaft engine having a gas generator (5) which can be rotated and a free turbine (6) rotated by the gas of the gas generator (5), the rotational speed of the free turbine (NTL) As soon as the ratio of the rotational speed (NGG) of the gas generator to the 5) and a device (20) for spontaneously and mechanically coupling the free turbine (6).