Invention Grant
- Patent Title: Rotor hub vibration attenuator
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Application No.: US15350073Application Date: 2016-11-13
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Publication No.: US10562617B2Publication Date: 2020-02-18
- Inventor: Jouyoung Jason Choi , David Heverly , Michael Seifert , Michael Smith , Frank Brad Stamps , Thomas Parham, Jr. , Amarjit Olenchery Kizhakkepat
- 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
- Agency: Lightfoot & Alford PLLC
- Main IPC: B64C27/00
- IPC: B64C27/00 ; B64C29/00

Abstract:
A vibration attenuation system for attenuating vibrations in a mast of an aircraft includes a weight attached to the mast but free to orbit about the mast. The weight can be comprised of one or more weight assemblies. Embodiments can include a single weight, or plural weight assemblies wherein each weight assembly can include a mechanical interconnecting mechanism so that each weight assembly receives feedback regarding the position and movement of one or more other weight assemblies. Each weight can be associated with a spring that urges the weight towards a neutral position. Rotation of the mast can cause the weight to orbit about the mast and self-excite such that the weight acts against the urging of the spring towards an attenuating position.
Public/Granted literature
- US20170259911A1 ROTOR HUB VIBRATION ATTENUATOR Public/Granted day:2017-09-14
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