Invention Grant
- Patent Title: Rotor hub for use with high-inertia blades
- Patent Title (中): 用于大惯性叶片的转子毂
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Application No.: US13391708Application Date: 2011-06-29
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Publication No.: US08444382B2Publication Date: 2013-05-21
- Inventor: Frank B. Stamps , Patrick R. Tisdale , Mithat Yuce
- Applicant: Frank B. Stamps , Patrick R. Tisdale , Mithat Yuce
- Applicant Address: US TX Fort Worth
- Assignee: Bell Helicopter Textron Inc.
- Current Assignee: Bell Helicopter Textron Inc.
- Current Assignee Address: US TX Fort Worth
- Agent James E. Walton; J. Oliver Williams
- International Application: PCT/US2011/042350 WO 20110629
- International Announcement: WO2013/002784 WO 20130103
- Main IPC: B64C27/51
- IPC: B64C27/51

Abstract:
A rotor hub has a yoke with radial arms allowing flapping of connected blades about a flap axis. A grip is rigidly attached to each blade, and a lead-lag bearing connects each grip to one of the arms, the bearing defining a lead-lag axis outboard of the flap axis. Each arm has a pair of straps located on opposite sides of the rotor plane for transferring centrifugal force from the blades to the central portion of the yoke. A pair of lead-lag dampers is provided for each grip, the dampers of each pair being located on opposite sides of the rotor plane and connecting an inboard end portion of the grip to the adjacent strap. In-plane motion of a blade causes rotation of the attached grip about the lead-lag axis, causing opposite motion of an inboard end portion of the grip. The dampers act to oppose rotation of the grip.
Public/Granted literature
- US20130004311A1 Rotor Hub for Use with High-Inertia Blades Public/Granted day:2013-01-03
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