Variable vane positioning apparatus for a gas turbine engine
US10570770B2 · kind B2 · utility
1Cited by
15References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2014 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Feb 8, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/58
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable vane assembly for a gas turbine engine includes at least one synchronization ring, a plurality of variable vanes connected to the synchronization ring, a plurality of torque boxes disposed circumferentially about the synchronization ring, a drive ring coupled to each of the torque boxes such that the drive ring causes an approximately identical torque to be applied to the synchronization ring from the torque boxes simultaneously, and an actuator coupled to one of the plurality of torque boxes and operable to drive the drive ring through the torque box.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.