Patent ID: 11859560
Assignee: SAFRAN TRANSMISSION SYSTEMS
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. An aircraft turbomachine, comprising:
a gas generator equipped with a turbine comprising a turbine shaft with an axis of rotation, and
a main fan propeller driven in rotation by a main propeller shaft, said main fan propeller being located upstream of a first annular splitter nose for separating a first annular flow duct for an internal primary flow from a second annular flow duct for an external secondary flow,
a secondary fan propeller driven in rotation by a secondary propeller shaft, said secondary fan propeller being located in the first annular flow duct, and
a power transmission module, comprising
a torque input configured to be connected to said turbine shaft,
a first torque output coupled to the main propeller shaft, and
a second torque output coupled to the secondary propeller shaft,

said power transmission module comprising a mechanical reducer comprising a sun gear forming said torque input, and planet gears carried by a planet carrier,
each of the planet gears comprising at least three independent toothings and comprising:
a first toothing meshed with the sun gear,
a second toothing meshed with an element forming one of the first and second torque outputs, and
a third toothing meshed with another element, said another element forming the other of the first and second torque outputs when said planet carrier is stationary, or said another element being a stationary ring gear when said planet carrier is movable and forms the other of the first and second torque outputs.