Method of selectively decoupling solidborne noise, a laminated ball joint, a mechanical connection, and an aircraft
US7631835B2 · kind B2 · utility
6Cited by
8References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 9, 2006 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Aug 20, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C2027/002
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Solidborne noise and vibration is decoupled in a rotary wing aircraft by a laminated ball joint (15) for a suspension bar (13) of a transmission gearbox, the ball joint including at least two damper layers (19) dedicated to a frequency band for decoupling in the range 0 to 7000 Hz. For this purpose, the damper layers (19) and possibly also likewise dedicated interleaved layers (20) are given shape and/or dimension and/or physical-property parameters as a function of the frequency for decoupling in the determined frequency band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.