Airfoil trailing edge
US4813633A · kind A · utility
26Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1986 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Dec 29, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C23/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An airfoil has a plurality of spaced apart, U-shaped troughs in either or both its suction or pressure surface in the trailing edge region. Each trough extends in a direction generally parallel to the bulk fluid flow in its vicinity near the airfoil surface and has an outlet at the trailing edge. The troughs increase in depth from their inlets toward their outlets, the maximum depth being no more than half the trailing edge thickness. The troughs are spaced apart, sized and configured to flow full over their entire length and to cause fluid to flow into the space immediately behind the trailing edge, thereby reducing base drag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.