TURBOCOMPRESSOR STALL-AND-SURGE PROTECTION DEVICE Russian patent published in 2005 - IPC

FIELD: aircraft systems.

SUBSTANCE: invention can be used in control systems of aircraft gas-turbine engines to reveal and prevent surge of compressor. Proposed device has after-compressor air temperature transmitters, after-compressor air pressure transmitter, first threshold device, air temperature transmitter after group of compressor stages, first functional converter and first adder and first multiplier connected in series with functional converter. Moreover, device is provided with second, third, fourth and fifth functional converters, second adder, second, third and fourth multipliers, third and fourth threshold devices whose outputs are connected with third and fourth inputs of OR circuit, and inputs, with outputs of second and fourth multipliers, respectively. Second inputs of multipliers are connected with output of after-compressor air pressure transmitter. Input of second functional converter is connected with output of air temperature transmitter after first group of compressor stages, and input of third functional converter is connected with output of after-compressor air temperature transmitter, and output of air pressure transmitter after first group of compressor stages is connected with second inputs of first and third multipliers.

EFFECT: improved surge protection of compressor.

1 dwg