Hybrid passive and active tip clearance system
US9957830B2 · kind B2 · utility
3Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2014 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Dec 22, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/62
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control ring extends circumferentially about a central axis. A plurality of circumferentially spaced carrier portions have a cavity receiving the control ring. There are circumferential gaps between the carrier portions. A blade outer air seal is mounted on the carrier portions radially inwardly of the control ring. The control ring maintains the carrier portions at a radially outwardly expanded position when heated by an electric heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.