Variable stator vane
US8734088B2 · kind B2 · utility
2Cited by
4References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2009 |
| Grant date | May 27, 2014 |
| Priority date | — |
| Expiry date | Nov 1, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/584
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable stator vane in a gas turbine engine has a journal provided with a circumferential recess. An aperture extends from the recess to a face of the journal directed towards the aerofoil portion of the vane. In operation of the engine, heated air, for example from a downstream compressor stage of the engine is admitted to the recess and flows through the aperture to, for example, the pressure surface of the aerofoil portion. The aerofoil portion is thereby heated, so preventing ice accretion on the vane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.