发明名称 |
HELICOPTER ROTOR |
摘要 |
A nodalized rotor system is provided for a multi-bladed helicopter. Equally spaced radial arms each have an inboard flapping section to accommodate beam-wise blade flapping and an outboard flex section to accommodate pitch changes. A blade is coupled to the end of each arm with a cuff and pitch horn rigidly connected to the blade and pivotally connected to its arm in the region of the flapping section. The blade has a concentration of weight over the section of blade extending from about 32% to 42% of the hub-blade radius of running weight four times the running weight at 50% of the hub-blade radius. Said blade has a reduced mass at outboard 30% of the hub-blade radius, at a level of 80% of the running weight at 50% of the hub-blade radius. |
申请公布号 |
DE3564411(D1) |
申请公布日期 |
1988.09.22 |
申请号 |
DE19853564411 |
申请日期 |
1985.01.08 |
申请人 |
BELL HELICOPTER TEXTRON INC. |
发明人 |
YEN, JING GWO;POPELKA, DAVID ALFRED |
分类号 |
B64C27/51;B64C27/33;B64C27/473;(IPC1-7):B64C27/46 |
主分类号 |
B64C27/51 |
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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