초록 ▼

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 measu

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.

대표청구항 ▼

[ We claim:] [1.] A controller for a compressor, characterized by:first means for sensing fluid flow properties in a fluid flow path around a compressor flow axis to produce first signals that manifest circumferential asymmetry of said fluid flow;second means for providing a second signal that manif

[ We claim:] [1.] A controller for a compressor, characterized by:first means for sensing fluid flow properties in a fluid flow path around a compressor flow axis to produce first signals that manifest circumferential asymmetry of said fluid flow;second means for providing a second signal that manifests the time rate of change of the mass flow of said fluid in the flow path;signal processing means comprising means for a providing a first processor signal from said first signals with a value that manifests the magnitude of said circumferential asymmetry; and for adding said first processing signal with said second signal to produce a control signal; andthird means for modifying said fluid flow as function of the magnitude of said control signal.