发明名称 |
Propeller pitch change mechanism with inductive brake and motor |
摘要 |
Pitch change for a variable pitch propeller or fan of the type utilized in a gas turbine engine is effectuated by the unique application of a bidirectional electrical induction AC motor and an electrical DC induction brake operatively connected to the pitch change actuator. The motor can be utilized in a slip speed range encompassing from a positive slip speed to zero slip speed and negative slip speeds which removes the limitations on the gear ratio.
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申请公布号 |
US5451141(A) |
申请公布日期 |
1995.09.19 |
申请号 |
US19930173526 |
申请日期 |
1993.12.23 |
申请人 |
UNITED TECHNOLOGIES CORPORATION |
发明人 |
CARVALHO, PAUL A.;GAMES, JOHN E.;BONNANZIO, RICHARD L. |
分类号 |
B64C11/44;F04D29/32;(IPC1-7):B64C11/44 |
主分类号 |
B64C11/44 |
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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