Main rotor shaft mounted hydraulic pressure system
First Claim
1. A hydraulic pressure system for a rotor hub assembly comprising:
- a support structure defined along an axis said support structure removably mounted at least partially within the rotor hub assembly along an axis of rotation of the rotor hub assembly for rotation with the rotor hub assembly;
a hydraulic pump comprising a pump body and a pump shaft;
said pump body mounted within said support structure for rotation with said support structure relative to said pump shaft.
1 Assignment
0 Petitions
Accused Products
Abstract
A rotor system includes a hydraulic pressure system located within a rotor shaft along an axis or rotation. The hydraulic pressure system is within the rotating field such that fluid pressure is generated and supplied from within the rotational field without the need to cross a rotational interface. Differential rotation between the rotor shaft and a standpipe rotates a hydraulic pump body relative a hydraulic pump shaft. The hydraulic pressure system is contained within a support structure so as to be readily mounted and removed from the rotor hub for replacement or maintenance. A gear system is mounted to the support structure between the standpipe and the hydraulic pump shaft to step-up or step-down the relative rotation between the rotor shaft and the standpipe.
21 Citations
24 Claims
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1. A hydraulic pressure system for a rotor hub assembly comprising:
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a support structure defined along an axis said support structure removably mounted at least partially within the rotor hub assembly along an axis of rotation of the rotor hub assembly for rotation with the rotor hub assembly;
a hydraulic pump comprising a pump body and a pump shaft;
said pump body mounted within said support structure for rotation with said support structure relative to said pump shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A rotor hub assembly for a rotary wing aircraft comprising:
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a standpipe mounted along an axis of rotation;
a main rotor shaft mounted concentric with said standpipe and along said axis of rotation, said main rotor shaft rotationally mounted relative said standpipe; and
a hydraulic pump mounted along said axis of rotation, said hydraulic pump comprising a pump body mounted for rotation relative a pump shaft mounted to said standpipe. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A hydraulic pressure system for a rotor hub assembly comprising:
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a support structure defined along an axis, said support structure comprises a flanged cylinder mounted within a main rotor shaft;
a hydraulic pump comprising a pump body and a pump shaft;
said pump body mounted within said support structure for rotation relative said pump shaft.
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23. A hydraulic pressure system for a rotor hub assembly comprising:
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a support structure defined along an axis, said support structure comprises a cylinder having a flange extending radially therefrom, said flange mounted to a rotor hub and said cylinder mounted within a main rotor shaft, a cylinder outer diameter of said cylinder spaced away from an inner diameter of said main rotor shaft;
a hydraulic pump comprising a pump body and a pump shaft;
said pump body mounted within said support structure for rotation relative said pump shaft.
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24. A hydraulic pressure system for a rotor hub assembly comprising:
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a support structure defined along an axis;
a hydraulic pump comprising a pump body and a pump shaft;
a gear system mounted between said pump shaft and a rotationally fixed standpipe;
said pump body mounted within said support structure for rotation relative said pump shaft.
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Specification