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US 8,133,027 B2Granted
Integrated actuator for a propeller system
AssigneeHamilton Sundstrand Corporation
InventorsPaul A. Carvalho, David V. Arel
Life of this patent
Estimating the term…
Abstract
A propeller system includes a propeller hub which supports a multiple of propeller blades. A tailshaft extends from a propeller hub portion of the propeller hub along an axis of rotation with a propeller pitch change yoke mounted within the propeller hub for movement along an axis of rotation to change a pitch of the multiple of propeller blades, the propeller pitch change yoke in sliding engagement with the tailshaft.
Claims13
A propeller system comprising:
- a multiple of propeller blades;
- a propeller hub which supports said multiple of propeller blades, said propeller hub includes a tailshaft which extends from a propeller hub portion along an axis of rotation;
- a propeller pitch change yoke mounted within said propeller hub for movement along said axis of rotation to change a pitch of said multiple of propeller blades, said propeller pitch change yoke in sliding engagement with said tailshaft;
- an actuator dome mounted to said propeller hub portion, said propeller pitch change yoke in sliding engagement with said actuator dome;
- and
- a dynamic seal supported on said propeller pitch change yoke to ride upon an inside diameter of said actuator dome.
3 more elements
A propeller system comprising:
- a multiple of propeller blades;
- a propeller hub which supports said multiple of propeller blades, said propeller hub includes a tailshaft which extends from a propeller hub portion along an axis of rotation;
- a propeller pitch change yoke mounted within said propeller hub for movement along said axis of rotation to change a pitch of said multiple of propeller blades, said propeller pitch change yoke in sliding engagement with said tailshaft;
- and
- a seal supported within said tailshaft, said propeller pitch change yoke slidably sealed to said tailshaft through said seal.
2 more elements
A propeller system comprising:
- a multiple of propeller blades;
- a propeller hub which supports said multiple of propeller blades, said propeller hub includes a tailshaft which extends from a propeller hub portion along an axis of rotation;
- a propeller pitch change yoke mounted within said propeller hub for movement along said axis of rotation to change a pitch of said multiple of propeller blades, said propeller pitch change yoke in sliding engagement with said tailshaft;
- and
- an inner diameter of said tailshaft defines an increase pitch change chamber with said propeller pitch change yoke.
2 more elements
A pitch change system comprising:
- a propeller hub that includes a tailshaft which extends from a propeller hub portion along an axis of rotation;
- an actuator dome mounted to said propeller hub portion;
- and
- a propeller pitch change yoke mounted within said propeller hub for movement along said axis of rotation, said propeller pitch change yoke in sliding engagement with said actuator dome and said tailshaft to define an increase pitch change chamber and a decrease pitch change chamber.
1 more element
A method of pitch change for a propeller system comprising:
- sliding a propeller pitch change yoke within a propeller hub for movement along an axis of rotation, the propeller pitch change yoke in sliding engagement with a tailshaft which extends from a propeller hub portion of the propeller hub to define a pitch change chamber.
Dependencies are inferred from the claim text.