Hub assembly with grease lubricated roller bearing and tension-torsion strap
US10059438B2 · kind B2 · utility
2Cited by
18References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2011 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Sep 4, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C29/0033
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rotary system and method to control feathering and centrifugal forces of a rotor blade during flight. The rotary system having a hub assembly, which includes a hollow yoke arm to receive a spindle section of the rotor blade. A tension-torsion strap extends through the hollow yoke arm and couples the rotor blade and the hub assembly. The method includes allowing the spindle section of the rotor blade to pivot within the hollow yoke arm and controlling rotational and centrifugal movement of the rotor blade with the tension-torsion strap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.