Rotor hub vibration attenuator
US11148790B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2020 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Feb 18, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C2027/003
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.