Bushing for variable vane in a gas turbine engine
US11746665B2 · kind B2 · utility
0Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 2022 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | May 27, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/509
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of operating a variable vane for a gas turbine includes the step of locating a first bushing at least partially surrounding a first trunnion that extends from a first end of the variable vane. The first trunnion includes an outer surface that has a plurality of troughs. The first bushing includes a plurality of peaks that extend inward from an inner surface. Relative movement is produced between the first bushing and the first trunnion to form a carbon transfer film between the first bushing and the first trunnion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.