Variable vane non-linear schedule for a gas turbine engine
US5190439A · kind A · utility
27Cited by
10References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1991 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Jul 15, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/563
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for adjusting the angle of variable angle inlet guide vanes provides a non-linear adjustment schedule for a selected vane row as compared to the adjustment schedule for the IGV vane row. The non-linear schedule is conveniently achieved by providing a modified adjustment linkage utilizing a bell crank. The non-linear schedule provides improved engine stall margin at low engine speeds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.