Rotorcraft rotor comprising a hub made of composite materials obtained from carbon fiber fabric dusted in a thermoplastic resin
US10118694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2016 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | May 14, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/48
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rotorcraft rotor comprising a hub made up of a monolithic body of composite material obtained by stacking successive layers of carbon fiber fabric dusted with a thermoplastic resin and compressed while hot. The hub is provided with branches on which respective blades are mounted via hinge systems, each including a strength member bearing radially against a corresponding branch. The strength members are individually received in sockets defined on fabrication so that when the rotor is set into rotation at a predefined operating speed, the radial thrust seat for enabling the strength members to bear against the branches present bearing surfaces that are cylindrical, the radial thrust seats then being of shape complementary to a cylindrical bearing surface of the corresponding strength member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.