Balance-bar hub for a twin blade rotor
US4755106A · kind A · utility
4Cited by
11References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1986 |
| Grant date | Jul 5, 1988 |
| Priority date | — |
| Expiry date | Nov 17, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention provides a balance bar twin blade hub. A beam is formed of a tube made from a composite material of evolutive form whose section is cylindrical at its end on the blade side and progressively elliptical as far as its central connection part. It is connected to a support stirrup 2 conical stratified stops 4 forming balance bar bearings identical to the conical stratified stops forming the centrifugal force take up and angle of attack bearings providing the connection between the blade 16 and the beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.