Compressor stall and surge control using airflow asymmetry measurement
US5915917A · kind A · utility
402Cited by
2References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1995 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Nov 2, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/101
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A technique for controlling compressor stall and surge is disclosed. In a gas turbine engine, static pressure asymmetry is sensed at a plurality of locations along the circumference of the compressor inlet. Time rate of change of the mass flow in the compressor is also estimated using pressure measurements in the compressor. A signal processor uses these signals to modulate a compressor bleed valve responsive to the level of flow property asymmetry, the time rate of change of the annulus average flow to enhance operability of the compressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.