Turbomachine comprising a speed reduction gear integrating an electric machine

A turbomachine having a longitudinal axis and comprising:

• a power shaft,
• a propeller shaft centered on the longitudinal axis,
• at least one speed reduction gear, the at least one speed reduction gear comprising an input pinion connected to the power shaft and an output pinion connected to the propeller shaft, and
• at least one electric machine which is integrated into the speed reduction gear and which is configured to provide electrical power to the propeller shaft or to take mechanical power from the propeller shaft, the at least one electric machine comprising a rotor configured to be driven in rotation about an axis coaxial with the longitudinal axis and a stator connected to a casing of the turbomachine,
• wherein the input pinion comprises an input axis offset relative to an axis of the output pinion, which is coaxial with the longitudinal axis, and the speed reduction gear comprises at least two intermediate transmission lines that are parallel and are configured to transmit the torque from the input pinion to the output pinion, which is configured to drive the rotor in rotation,
• wherein the speed reduction gear comprises a drive wheel driven, on the one hand, by the output pinion and driving, on the other hand, by a complementary pinion mounted on the rotor, the complementary pinion of the rotor comprising an axis parallel to the axis of the propeller shaft,
• wherein the drive wheel comprising first teeth meshing with second teeth of the output pinion,
• wherein the rotor has a cylindrical body and the complementary pinion extending radially outside the cylindrical body of the rotor.

A turbomachine having a longitudinal axis and comprising:

• a power shaft,
• a propeller shaft centered on the longitudinal axis,
• at least one speed reduction gear, the at least one speed reduction gear comprising an input pinion connected to the power shaft and an output pinion connected to the propeller shaft,
• at least one electric machine which is integrated into the speed reduction gear and which is configured to provide electrical power to the propeller shaft or to take mechanical power from the propeller shaft, the at least one electric machine comprising a rotor configured to be driven in rotation about an axis coaxial with the longitudinal axis and a stator connected to a casing of the turbomachine, and
• a pitch change system having a shaft coupled to an end of the propeller shaft, the shaft of the pitch change system being arranged coaxially with the axis of the propeller shaft,
• wherein the input pinion comprises an input axis offset relative to an axis of the output pinion, which is coaxial with the longitudinal axis, and the speed reduction gear comprises at least two intermediate transmission lines that are parallel and are configured to transmit the torque from the input pinion to the output pinion, which is configured to drive the rotor in rotation.