| 摘要 |
An extendable/retractable rotor for vertical lift has plural rotor blades, each with a rotor hub assembly, blade top and bottom hinged casings and a pitch disc rotateable about its longitudinal axis to change the rotor blade pitch angle. An interlink assembly has a blade base, a link base subassembly of top and bottom link hubs, two locking arms, a retracting reel assembly having exterior and interior rotor axles, a breaking actuator having plural outer breaking notches, plural recoiling spools forming a reel cage and a locking mechanism preventing blade retraction. A helical ribbon assembly with plural sequentially overlapped ribbons has pin restraints, plural layers each helically wound around the interlink assembly and a flexible and elastic sleeve of plural elastic ribs. An elastic and flexible skin made of composite elastomeric sheet reinforced by fibers is provided as is a zipper slider mechanism of a main slider, a zipper wedge, a wedge track, plural spring loaded wheels, plural hinged plates and plural hinge joints.
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