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    • 4. 发明授权
    • Method for folding helicopter main rotor blades
    • 折弯直升机主转子叶片的方法
    • US5211538A
    • 1993-05-18
    • US800578
    • 1991-11-27
    • Ajay SeghalBryan W. Marshall
    • Ajay SeghalBryan W. Marshall
    • B64C27/50
    • B64C27/50
    • A method of folding the main rotor blades of a helicopter for storage in which blade supports are removably attached to the nose and tail of the fuselage of the helicopter. A first and second main rotor blades then are aligned with the longitudinal axis running from the forward blade support to the aft blade support. The first and second blades are placed upon, and restrained from rotation in, the blade supports. Then the first and second blades are permitted to fold about the rotor assembly of the helicopter by releasing a locking member of each blade. The first and second blades are folded by rotating the main rotor assembly while restraining from rotation the first and second blades in the forward and aft blades supports, respectively. After the rotor assembly is rotated through approximately 90 degrees, a third and fourth of the rotor blades are aligned with the longitudinal axis running through the forward and aft blade supports and the first and second blades are fully folded. Finally, the third and fourth main rotor blades are placed upon the forward and aft blade supports.
    • 折叠直升机的主转子叶片的方法可拆卸地附接到直升机的机身的鼻部和尾部,用于存储刀片支撑的主转子叶片。 然后,第一和第二主转子叶片与从前叶片支撑件延伸到后叶片支撑件的纵向轴线对准。 第一和第二叶片被放置在叶片支撑件上并被限制于其中。 然后,允许第一和第二叶片通过释放每个叶片的锁定构件折叠在直升机的转子组件周围。 第一和第二叶片通过分别旋转主转子组件而分别折叠,同时限制前后叶片支撑件中的第一和第二叶片旋转。 在转子组件旋转大约90度之后,第三和第四转子叶片与延伸穿过前叶片和后叶片支撑件的纵向轴线对齐,并且第一和第二叶片被完全折叠。 最后,第三和第四主转子叶片被放置在前叶片和后叶片支撑件上。