Invention Grant
- Patent Title: Soft in-plane and stiff out-of-plane rotor system
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Application No.: US13804832Application Date: 2013-03-14
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Publication No.: US09656747B2Publication Date: 2017-05-23
- Inventor: Ken Shundo , Mithat Yuce , Frank B. Stamps
- Applicant: BELL HELICOPTER TEXTRON INC.
- 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
- Main IPC: B64C27/00
- IPC: B64C27/00 ; B64C27/80 ; B64C27/52 ; B64C27/10 ; B64C27/32 ; B64C27/35 ; B64C27/48 ; B64C11/02 ; B64C11/48 ; B64C27/51

Abstract:
A rotor assembly includes a yoke operably associated with a rotor blade. The yoke includes a first device and a second device that attach the rotor blade to the yoke. The first device is configured to allow transverse movement of the rotor blade about a chord axis and rotational movement about a pitch-change axis. The second device is configured to allow rotational movement of the rotor blade solely about the pitch-change axis. The method includes rotating rotor assembly about a first plane of rotation, while retaining a relatively stiff out-of-plane rotation and a relatively soft in-plane rotation during flight.
Public/Granted literature
- US20140271182A1 SOFT IN-PLANE AND STIFF OUT-OF-PLANE ROTOR SYSTEM Public/Granted day:2014-09-18
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