FIELD: test equipment.
SUBSTANCE: to shift parameter operating point of a compressor stage to the limits of stable operation, work medium (air) is fed to blade channel of stator in the compressor stage under test. Work medium is fed directly to the blade channel of the tested stage by jet nozzle with diagonal cut. Work medium flow rate is controlled by throttle gate. Work medium can also be fed into hollow stator blade of the tested stage and enter flow section through a special orifice system at the profile surface, causing separation of boundary level.
EFFECT: study of parameters in single stages of axial compressor in turbine engine, study of axial compressor stage operation modes at the limits of stable operation without adverse effect on elements of the engine under test.
3 cl, 3 dwg
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