US 12,428,131 B2
Module for an aircraft turbine engine
Jean Charles Olivier Roda, Moissy-Cramayel (FR); and Didier René André Escure, Moissy-Cramayel (FR)
Assigned to SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 18/856,838
Filed by SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Apr. 11, 2023, PCT No. PCT/FR2023/050521
§ 371(c)(1), (2) Date Oct. 14, 2024,
PCT Pub. No. WO2023/198987, PCT Pub. Date Oct. 19, 2023.
Claims priority of application No. 2203561 (FR), filed on Apr. 15, 2022.
Prior Publication US 2025/0256835 A1, Aug. 14, 2025
Int. Cl. B64C 11/38 (2006.01); F01D 7/00 (2006.01)
CPC B64C 11/38 (2013.01) [F01D 7/00 (2013.01); F05D 2220/323 (2013.01); F05D 2260/74 (2013.01); F05D 2260/79 (2013.01); F05D 2270/64 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A module for an aircraft turbine engine, the module having a longitudinal axis and comprising:
a hub centered on the longitudinal axis and configured to be movable in rotation about 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; and
a device for changing the pitch of the vanes about their pitch axes, the device comprising:
a hydraulic actuator configured to be movable in rotation about the longitudinal axis and configured to drive the vanes about their pitch axes; and
a supply pump for supplying fluid to the hydraulic actuator, the supply pump comprising:
axial pistons configured to be movable in rotation about the longitudinal axis and configured to transfer the fluid to the hydraulic actuator;
a connecting plate connected to the axial pistons and cooperating with an annular main plate centered on the longitudinal axis, the main plate being configured to be stationary in rotation about the longitudinal axis and tiltable relative to the longitudinal axis, the connecting plate being arranged between the main plate and the axial pistons; wherein the axial pistons are able to move in translation in a direction parallel to the longitudinal axis, and wherein the tilting of the main plate causes the axial pistons to move in the direction parallel to the longitudinal axis; and
an auxiliary actuator connected to the connecting plate and configured to drive in rotation the connecting plate about the longitudinal axis.