发明名称 |
Rotary blades |
摘要 |
A rotary blade includes a fixed boundary layer control device extending spanwise on a lower surface adjacent the trailing edge to improve the lift/thrust characteristics of the blade especially at positive incidence angles. It was discovered that expected detrimental effects at zero/negative incidence did not materialize and the reasons are identified. Such blades are particularly useful for helicopter sustaining and anti-torque rotors.
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申请公布号 |
US5492448(A) |
申请公布日期 |
1996.02.20 |
申请号 |
US19940207053 |
申请日期 |
1994.03.08 |
申请人 |
WESTLAND HELICOPTERS LIMITED |
发明人 |
PERRY, FREDERICK J.;BROCKLEHURST, ALAN |
分类号 |
B64C27/46;B64C3/14;B64C11/18;B64C27/467;B64C27/473;(IPC1-7):B64C27/467 |
主分类号 |
B64C27/46 |
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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