Blade section for rotating wings of an aircraft
US4416434A · kind A · utility
25Cited by
4References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 17, 1981 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Aug 17, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/467
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a blade section for rotating wings of an aircraft comprising, between the leading edge and the trailing edge, a convex lower surface and an upper surface which is convex over the greater part of its length, but concave near the trailing edge. According to the invention, the upper surface of the section comprises a region of small extent, close to the leading edge but not contiguous thereto, in which the curvature is substantially constant. The invention is applicable to the improvement of the performances in maneuvering flight, while hovering and in advance flight of the aircraft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.