Combined control for supplying cooling air and support air in a turbine engine nozzle
US7854124B2 · kind B2 · utility
7Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2006 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Feb 19, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02K1/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A balance pressure control is provided for flaps which pivot in a rear of a gas turbine engine nozzle to change the cross-sectional area of the nozzle. An actuator drives a sync ring to move the flaps through a linkage. A supply of pressurized air is also provided to the sync ring to assist the actuator in resisting forces from high pressure gases within the nozzle. When those forces are lower than normal the flow of air to the rear of the sync ring is reduced or blocked. A ring rotates with another ring to control both this air flow, and a supply of cooling air to an interior of the nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.