US 12,281,581 B1
Module for an aircraft turbine engine
Caroline Marie Frantz, Moissy-Cramayel (FR); Bastien Pierre Verdier, Moissy-Cramayel (FR); and Jean Charles Olivier Roda, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 18/695,477
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Sep. 26, 2022, PCT No. PCT/FR2022/051800
§ 371(c)(1), (2) Date Mar. 26, 2024,
PCT Pub. No. WO2023/052713, PCT Pub. Date Jun. 4, 2023.
Claims priority of application No. 2110275 (FR), filed on Sep. 29, 2021.
Int. Cl. F01D 15/10 (2006.01); F01D 7/00 (2006.01); F02C 7/36 (2006.01); F04D 25/06 (2006.01)
CPC F01D 15/10 (2013.01) [F01D 7/00 (2013.01); F02C 7/36 (2013.01); F04D 25/0693 (2013.01); F05D 2220/323 (2013.01); F05D 2220/76 (2013.01); F05D 2240/30 (2013.01); F05D 2260/40311 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A module for an aircraft turbine engine having a longitudinal axis, the module comprising:
a hub extending around the longitudinal axis and movable in rotation around the longitudinal axis;
vanes carried by the hub, each of the vanes being movable about a pitch axis extending radially with respect to the longitudinal axis;
a drive shaft designed to drive in rotation the hub about the longitudinal axis;
a mechanical speed reducer configured to connect a low-pressure shaft of the turbine engine to the drive shaft, the speed reducer having a first element designed to cooperate with the low-pressure shaft, a second element secured in rotation to the drive shaft, and a third element fixed in rotation about the longitudinal axis; and
a device for changing the pitch of the vanes about their pitch axes, the device including:
a hydraulic actuator movable in rotation about the longitudinal axis and configured to drive the vanes about their pitch axes;
a pump for supplying fluid to the hydraulic actuator having a transmission shaft and an envelope arranged around the transmission shaft and secured in rotation to the drive shaft; and
an electric machine having a rotor secured in rotation to the transmission shaft and a stator fixed in rotation about the longitudinal axis, the stator configured to be connected to a power supply cable,
wherein a passage for the power supply cable is provided in the third element of the speed reducer.