Dual frequency damper for an aircraft
US8622375B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2012 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Jun 28, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/51
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A dual frequency damper includes a liquid inertia vibration eliminator (LIVE) portion and a fluid damper portion. LIVE portion and fluid damper portion operate in series and function so that dual frequency damper is optimized in both stiffness and damping at multiple frequencies. LIVE portion acts as a frequency dependent switch to selectively cause low frequency oscillatory forces to be treated primarily by the high spring rate and high damping rate characteristics of the fluid damper portion, and also to select high frequency oscillatory forces to be primarily treated by the low spring rate and low damping rate characteristics of the LIVE unit portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.