METHOD AND DEVICE FOR PROTECTING TURBO-COMPRESSOR AGAINST PUMPAGE Russian patent published in 1995 - IPC

FIELD: engine engineering. SUBSTANCE: air pressure downstream of the first group of stages of the compressor and gas pressure at the outlet section of the propulsive nozzle are measured and signals of existing pumpage in the case when sum of magnitudes of pressures downstream of compressor exceeds the threshold pressure, air pressure downstream of the first group of the compressor stages, and gas pressure at the end section of the propulsive nozzle or when threshold pressure exceeds speed signal delayed for a given time interval the means of the signal of rate of changing pressure downstream of the compressor are generated. The device is additionally has air pressure gauges mounted downstream of the first group of the compressor stages, gas gauges mounted at the outlet section of the propulsive nozzle, and adder. EFFECT: enhanced reliability. 3 cl, 2 dwg