Invention Grant
US07789341B2 Rotary wing aircraft having a non-rotating structural backbone and a rotor blade pitch controller 有权
旋翼机具有不旋转的结构主干和转子叶片桨距控制器

Rotary wing aircraft having a non-rotating structural backbone and a rotor blade pitch controller
Abstract:
A rotary wing vehicle includes a body structure having an elongated tubular backbone or core, and a counter-rotating coaxial rotor system having rotors with each rotor having a separate motor to drive the rotors about a common rotor axis of rotation. The rotor system is used to move the rotary wing vehicle in directional flight.
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