| 发明名称 |
Helicopter blade |
| 摘要 |
A helicopter blade of improved airfoil shape which reduces or eliminates retreating blade stall by reducing the magnitude of the upper airfoil blade surface peak pressure and distributes it over a greater chord section of the blade to thereby reduce flow separation and drag.
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| 申请公布号 |
US4142837(A) |
申请公布日期 |
1979.03.06 |
| 申请号 |
US19770850765 |
申请日期 |
1977.11.11 |
| 申请人 |
UNITED TECHNOLOGIES CORPORATION |
发明人 |
DE SIMONE, GARY J. |
| 分类号 |
B64C3/14;B64C27/46;B64C27/467;(IPC1-7):B64C27/46 |
主分类号 |
B64C3/14 |
| 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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