|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||B64C-027/10 B64C-027/54 B64C-027/58|
|미국특허분류(USC)||244/017.23; 244/017.25; 416/124; 416/127|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 5 인용 특허 : 15|
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.
1. A rotary wing aircraft comprising: an airframe for supporting a plurality of rotor systems for rotation about a common axis of rotation;a first rotor system of the plurality of rotor systems, the first rotor system including first variable pitch rotor blades supported for rotation about the common rotor axis of rotation in a first rotor plane of rotation and a first pitch controller for controlling the pitch of the first rotor blades;a second rotor system of the plurality of rotor systems, the second rotor system including second variable pitch rotor ...