Dual mode rotor hub assembly
US9126680B2 · kind B2 · utility
12Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2011 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Jul 30, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49332
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rotor hub assembly and method for controlling movement of a rotor blade relative to a swashplate. The hub assembly having an attachment device operably associated with the rotor blade and the swashplate. The attachment device provides pivot and rotational blade movement relative to the swashplate. A dual spring-rate damper is operably associated with the attachment device. The damper switches between a first spring rate and a second spring rate during flight to control movement of the rotor blade. The method includes the process of switching the damper between the first spring rate and the second spring rate during flight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.