High efficiency tip vortex reversal and induced drag reduction
US7497403B2 · kind B2 · utility
11Cited by
40References
51Claims
0Family size
Inventor
Key dates
| Filing date | Jul 10, 2006 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | Aug 13, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Methods for increasing the performance of a foil (100) by using tip droop (102) having an inward directed camber capable of generating an inward directed lifting force on the tip droop (102) in order to control spanwise flow conditions adjacent the tip (112) of a foil (100). Methods for varying the inward lifting shape of a tip droop (102) are provided along with methods for varying the angle of attack and camber of the tip droop (102) as the angle of attack of the foil (100) is changed and as spanwise flow conditions vary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.