Hub assembly having a pitch lock system
AssigneeGE Avio S.r.l.
InventorsPaolo Altamura, Giulio Zagato
Life of this patent
Estimating the term…
Abstract
A pitch lock system including an outer member having a centerline axis, an inner member located radially inward of the outer member with respect to the centerline axis, and a plurality of clutch elements located between the outer member and the inner member. The pitch lock system has a disengaged position and an engaged position. In the engaged position, the plurality of clutch elements are constrained between the inner member and the outer member such that relative axial direction of the plurality of clutch elements is permitted in only one direction. An engine includes a pitch actuator and the pitch lock system.
Claims19
A hub assembly comprising:
- a hydraulic pitch actuator configured to move in a first direction and a second direction opposite the first direction;
- a pitch lock system for preventing the hydraulic pitch actuator from moving in the first direction or the second direction, the pitch lock system comprising:
- an outer member having a centerline axis;
- an inner member located radially inward of the outer member with respect to the centerline axis;
- a plurality of clutch plates located between the outer member and the inner member;
- and
- wherein the pitch lock system has a disengaged position and an engaged position, and, in the engaged position, the relative axial direction of the plurality of clutch plates is permitted in only one direction and the inner member is forced radially inwards to prevent movement of the hydraulic pitch actuator in the first direction or the second direction.
A turbine engine comprising:
- a core engine including a compressor section, a combustion section, and a turbine section in a serial flow relationship;
- a hub assembly comprising:
- a hydraulic pitch actuator configured to move in a first direction and a second direction opposite the first direction;
- and
- a pitch lock system for preventing the hydraulic pitch actuator from moving in the first direction or the second direction, the pitch lock system including:
- an outer member having a centerline axis;
- an inner member located radially inward of the outer member with respect to the centerline axis;
- a plurality of clutch plates located between the outer member and the inner member;
- and
- wherein, the pitch lock system has a disengaged position and an engaged position, and, in the engaged position, the relative axial direction of the plurality of clutch plates is permitted in only one direction such that the inner member is forced radially inwards to prevent movement of the hydraulic pitch actuator in the first direction or the second direction.
Dependencies are inferred from the claim text.