Invention Grant
- Patent Title: Articulated rotor systems with blade-to-blade damping
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Application No.: US15961713Application Date: 2018-04-24
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Publication No.: US10597150B2Publication Date: 2020-03-24
- Inventor: Andrew Paul Haldeman , Dalton T Hampton , Frank Bradley Stamps
- Applicant: Textron Innovations Inc.
- Applicant Address: US RI Providence
- Assignee: Textron Innovations Inc.
- Current Assignee: Textron Innovations Inc.
- Current Assignee Address: US RI Providence
- Agency: Lawrence Youst PLLC
- Main IPC: B64C27/51
- IPC: B64C27/51 ; B64C27/48

Abstract:
A rotor system includes a yoke, a plurality of blade grip assemblies and a plurality of centrifugal force bearings coupling the blade grip assemblies with the yoke. A plurality of rotor blades are coupled to the blade grip assemblies such that each rotor blade has a coincident hinge and such that each rotor blade has three independent degrees of freedom including blade pitch about a pitch change axis, blade flap about a flapping axis and lead-lag about a lead-lag axis. A blade-to-blade damping ring includes a plurality of damper anchors each coupled to one of the blade grip assemblies along the respective pitch change axis and a plurality of lead-lag dampers each coupled between adjacent damper anchors. During blade pitch operations, each blade grip assembly is operable to rotate relative to the respective damper anchor, such that the blade-to-blade damping ring is operable to provide pitch independent lead-lag damping.
Public/Granted literature
- US20190322363A1 Articulated Rotor Systems with Blade-to-Blade Damping Public/Granted day:2019-10-24
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