Lead-lag damper for rotor hubs
US8764396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2008 |
| Grant date | Jul 1, 2014 |
| Priority date | — |
| Expiry date | Jul 12, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F13/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A lead-lag damper for a rotor assembly has a body mounted to either an inboard portion of a blade assembly or a fixed portion of the rotor assembly. A piston carried within the body is configured to allow for relative motion between the body and the piston. The piston defines opposing chambers within the body, the chambers being in fluid communication through a fluid passage. A link connects the piston to the other of the inboard portion of the blade assembly and the fixed portion of the rotor assembly, and the link engages a central portion of the piston. The piston acts on fluid in the chambers during relative motion between the piston and the body and causes fluid flow between the chambers through the fluid passage. Flow through the passage acts to damp lead-lag motion of the blade assembly relative to the fixed portion of the rotor assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.