US 11,859,560 B2
Power transmission module for an aircraft turbomachine
Guillaume Pierre Mouly, Moissy-Cramayel (FR); Adrien Louis Simon, Moissy-Cramayel (FR); Guillaume Julien Beck, Moissy-Cramayel (FR); and Simon Loic Clement Lefebvre, Moissy-Cramayel (FR)
Assigned to SAFRAN TRANSMISSION SYSTEMS, Colombes (FR)
Filed by SAFRAN TRANSMISSION SYSTEMS, Colombes (FR)
Filed on Sep. 20, 2022, as Appl. No. 17/933,606.
Claims priority of application No. 2109922 (FR), filed on Sep. 21, 2021.
Prior Publication US 2023/0091328 A1, Mar. 23, 2023
Int. Cl. F02C 7/36 (2006.01)
CPC F02C 7/36 (2013.01) [F05D 2220/323 (2013.01); F05D 2240/60 (2013.01); F05D 2260/40311 (2013.01)] 12 Claims
OG exemplary drawing
 
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.