Synthesized feedback for gas turbine clearance control
US4999991A · kind A · utility
24Cited by
7References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1989 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Oct 12, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D11/24
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for controlling radial clearance in a gas turbine engine (10) uses a mathematical algorithm to synthesize the current clearance .delta., including the transient effects of prior engine operations. The synthesized clearance is compared (202) to a schedule of desired clearance (206) for closing .delta. a cooling air modulating valve (44) as required to avoid rubbing between the rotating blade tips and surrounding shroud.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.