Blade for the rotary wings of an aircraft
US6364615B1 · kind B1 · utility
11Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 2000 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | May 19, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S416/05
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a blade with a swept-back tip for the rotary wings of an aircraft, particularly a helicopter, said blade (1) being formed from successive elementary cross sections.According to the invention, with said blade (1) being subdivided into various zones, the chord length L and the offset Y′f of the aerodynamic center with respect to the feathering axis (OX), as well as the relative thickness of each elementary section, are optimized for flight within a moderate speed range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.