Pitch-control devices for hingeless rotors
US5562415A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1995 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Oct 5, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/58
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
For each blade, the cuff which is rigid in torsion, surrounding the corresponding rotor attachment twistable arm, bears two opposed pitch levers each articulated to one respectively of two intermediate connecting rods which are moreover articulated to one and the same transmission lever on either side of a pivoting link by means of which this lever pivots on a pivot secured to the rotor mast. The transmission lever is additionally articulated to the pitch-control rod at a point which is offset with respect to its pivoting link. A crossmember is articulated to the connecting rods and interacts with an assembly having a drag damper, this assembly itself being articulated to a fixed point secured in terms of rotation to the rotor mast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.