Rotorcraft blade provided with a tiltable flap and a fastener tongue
US7594796B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2006 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Jan 16, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/30
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a rotorcraft rotor blade (1) that comprises at least one tiltable trailing-edge flap (5), said flap (5) being suitable for pivoting about a virtual hinge axis (Y′) extending substantially in the span direction of said blade (1) and of said flap (5). The blade (1) is remarkable in that the flap (5) is provided with at least two fastener ball joints (30), each provided with an inner cage (32) together with an outer cage (33) and a first pin (31) that is also secured to said flap (5), the first pins (31) of the fastener ball joints (30) being perpendicular to the virtual pivot axis (Y′) of the flap (5). In addition, the blade (1) is provided at its trailing edge (BF) with a fastener tongue (20) provided with ball-receiving sockets (21), the outer cages (33) of the fastener ball joints (30) being secured to the ball-receiving sockets (21).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.