Flex beam for rotor assembly
US10618630B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2015 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Oct 27, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/473
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rotor assembly for a rotary wing aircraft includes a rotor hub having a central axis. The rotor hub is rotatable about the central axis. A plurality of flexible structural members extend radially outwardly from the rotor hub. Each flexible structural member is substantially U-shaped having a first arm extending from the hub, a second arm extending from the hub, and an end portion connecting the first arm to the second arm at a radially outboard end of the flexible structural member. The first arm, the second arm and/or the end portion have a cross section with a height along the central axis greater than a thickness of the cross section to increase stiffness of the rotor assembly along the central axis. The rotor assembly further includes a plurality of rotor blades, each rotor blade being secured to each flexible structural member of the plurality of flexible structural members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.