- 专利标题： Spring system varying stiffness with applied force for use in a torque dependent rotor of a rotary wing aircraft
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申请号： US16041656申请日： 2018-07-20
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公开(公告)号： US11267569B2公开(公告)日： 2022-03-08
- 发明人: Petter Muren , Trygve Frederik Marton , Ivar Johnsrud , Pal Hagh Sandberg , Christian Moengen , Jo Eyvin Bjaarstad
- 申请人： FLIR Unmanned Aerial Systems AS
- 申请人地址： NO Hvalstad
- 专利权人： FLIR Unmanned Aerial Systems AS
- 当前专利权人： FLIR Unmanned Aerial Systems AS
- 当前专利权人地址： NO Hvalstad
- 代理机构： Haynes and Boone, LLP
- 优先权： NO20160105 20160120
- 主分类号： B64C27/54
- IPC分类号： B64C27/54 ; B64C27/48 ; A63H27/00 ; G05D1/08 ; B64C27/635 ; B64C27/00 ; B64C27/625 ; B64C39/02
摘要：
Embodiments disclosed herein present a spring system for use in a torque dependent rotor assembly designed to operate in resonance, where changes in applied torque controls the blade pitch angle and ultimately the movements of a rotary wing aircraft. More specifically, the present invention relates to a spring system used in such a rotor assembly where the stiffness of an associated spring member is allowed to vary in response to the torque applied from a motor to the assembly.