Transmission mechanism for extension and retraction of ceiling propeller of low-altitude civil rotorcraft capable of vertical takeoff and landing
The invention provides a transmission mechanism for extension and retraction of a ceiling propeller of a low-altitude civil rotorcraft capable of vertical takeoff and landing. The transmission mechanism simply achieves extension and retraction of the ceiling propeller, adjusts the length of the ceil...
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Format: | Patent |
Sprache: | eng |
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