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Aircraft propeller hub mechanism for varying propeller pitch
Aircraft propeller hub mechanism for varying propeller pitch
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机译：飞机螺旋桨毂机构，用于改变螺旋桨螺距
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摘要
A sliding fork component acts against the root portions (6) of the propeller blades (8) via an intermediate roller bearing assembly. The fork may alternatively contact the blade roots via a rack and pinion mechanism, with a control pinion (14) driven manually, electrically, mechanically or hydraulically. The assembly is secured together by fastening screws in the interior of the mechanism, which may be reached by using a key to pass through holes in the hub casing (4). The connection between the fork and the propeller blades is such as to allow retro-fitting to existing propeller mechanisms of a range of designs.
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