Flow-straightener vane for counter-torque device with ducted rotor and ducted flow-straightening stator, for helicopter
US5619797A · kind A · utility
1Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Apr 13, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49339
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a vane for a counter torque device includes extruding a hollow metal section of cross-section corresponding to the aerodynamic profile of the vane, in cutting off a section portion of length not substantially less than the span of the vane, and in arranging each end of the section portion as an end fitting with at least one fastening tab, either by machining and deformation of the ends of the section portion, or by fitting end fittings attached to its ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.