FIELD: aircraft industry; gas-turbine engines.
SUBSTANCE: system to by-pass air from behind high-pressure compressor when starting gas-turbine by-pass engine including main line by-passing air into outer circuit, overlapping device with drive from pneumatic cylinder installed in main line and control channel communicating working space of pneumatic cylinder with space behind high-pressure compressor is provided, according to invention, with throttle with constant passage area installed in control channel, and working space of pneumatic cylinder is additionally connected with outer circuit through throttle with variable passage area.
EFFECT: improved operating characteristics, prevention of surging in compressor owing to provision of gradually closing air by-pass main line.
1 dwg
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