Tilt outboard wing for tilt rotor aircraft
US7802754B2 · kind B2 · utility
37Cited by
18References
15Claims
0Family size
Inventor
Key dates
| Filing date | Aug 15, 2006 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Mar 27, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C29/0033
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Tilt-rotor aircraft experience increased efficiency and fuel economy by including wing extensions outboard of the tilting nacelles. Stall and buffeting during conversion from rotor-born hover to wing-born forward flight are reduced to an acceptable level using wide chord flaps deflected upwards by at least 15-20°, preferably in combination with leading edge slats. The outboard wing or wing portion preferably has a span at least 25-40% of a span of the inboard section, and a total surface area at least 10-20% the total surface area of the corresponding inboard section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.