The invention relates to a turboshaft engine comprising a gas generator (5) that is capable of being rotated, and a free turbine (6) that is rotated by the gases of said gas generator (5), characterised in that it comprises a device (20) for spontaneously mechanically coupling said gas generator (5) and said free turbine (6) that is capable of mechanically and spontaneously connecting said gas generator (5) and said free turbine (6) as soon as the ratio of the rotational speed (NGG) of said gas generator to the rotational speed (NTL) of said free turbine reaches a predetermined threshold value.
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
2017-05-04
Patent
Electronic Resource
English
European Patent Office | 2019
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