发明名称 |
Modular propeller blade pitch actuation system |
摘要 |
A modular, easily replaceable, pitch actuation system is removably secured within the hub of an aircraft. The modular system houses a driving system which provides a rotational output to set the pitch of propeller blades mounted to the hub, and a pitch changing system that controls the driving system. The driving system includes a high-speed, low-torque hydraulic motor that drives an harmonic drive to amplify the torque of the motor. The pitch changing system includes an actuator which positions a valve that controls the hydraulic motor, and a nulling gear which repositions the valve and acts as a pitch lock.
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申请公布号 |
US4750862(A) |
申请公布日期 |
1988.06.14 |
申请号 |
US19860936046 |
申请日期 |
1986.11.28 |
申请人 |
UNITED TECHNOLOGIES CORPORATION |
发明人 |
BARNES, PHILIP E.;KUSIAK, EDWARD H. |
分类号 |
B64C11/32;B64C11/30;B64C11/40;(IPC1-7):B64C11/38 |
主分类号 |
B64C11/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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