公开(公告)号：US20200001987A1

公开(公告)日：2020-01-02

申请号：US16084970

申请日：2017-03-14

Applicant: BELL HELICOPTER TEXTRON, INC.

Inventor： Jouyoung Jason CHOI ,  David HEVERLY ,  Michael SEIFERT ,  Michael SMITH ,  Frank Brad STAMPS ,  Thomas PARHAM, JR. ,  Amarjit Olenchery KIZHAKKEPAT

IPC: B64C27/00 ,  F16F7/116

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.