TURBOMOTEUR, HELICOPTERE BIMOTEUR EQUIPPED WITH SUCH A TURBOMOTEUR AND METHOD FOR OPTIMIZATION OF THE SUPER-SLOWING SPEED WITH NULL POWER OF SUCH A BIMOTING HELICOPTER

摘要

The invention relates to a turbine engine comprising a gas generator (5) adapted to be rotated and a free turbine (6) driven in rotation by the gases of said gas generator (5), characterized in that it comprises a device (20) spontaneous mechanical coupling of said gas generator (5) and said free turbine (6) adapted to mechanically and spontaneously link said gas generator (5) and said free turbine (6) as soon as the ratio of the speed ( NGG) of rotation of said gas generator by the speed (NTL) of rotation of said free turbine reaches a predetermined threshold value.