发明名称 |
TURBOFAN BLADE PITCH CONTROL MECHANISM COMPRISING COUNTERWEIGHT FEATHERING DEVICE |
摘要 |
A device for controlling orientation of fan blades of a turboprop including at least one set of fan blades having adjustable orientation attached in rotation to a rotating ring mechanically connected to a turbine rotor. Each blade of the set is coupled to a blade root support pivotably mounted on the rotating ring by a conical gear train including a first gear wheel attached to the blade root support and a second gear wheel attached to the rotating ring and bearing a counterweight that is eccentric with respect to its axis of rotation. A cylinder attached in rotation to the turbine rotor and a rod of which is connected to each counterweight through a connecting arm makes it possible to impart synchronous angular displacement to all the counterweights about the axis of rotation of their respective gear wheel. |
申请公布号 |
EP2542470(A1) |
申请公布日期 |
2013.01.09 |
申请号 |
EP20110712605 |
申请日期 |
2011.02.18 |
申请人 |
SNECMA |
发明人 |
GALLET, FRANCOIS |
分类号 |
B64C11/30;B64C11/32;F01D7/00;F02K3/04;F04D29/36 |
主分类号 |
B64C11/30 |
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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