公开(公告)号：US20170259911A1

公开(公告)日：2017-09-14

申请号：US15350073

申请日：2016-11-13

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

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.