FIELD: aviation technology.
SUBSTANCE: analog data coming from nozzles for measuring pulsation of total and static pressures which nozzles are mounted at input and output of compressor to speed pulsation measuring unit. Simultaneously pressure pulsation is measured above blades of working wheel. Data on pulsation enters sync input and registration unit. Analog signals are introduced by means of sync input and registration unit for subsequent processing of fast-changing pressures to build isobars visualizing structure of flow in rotating working wheel during time periods corresponding to time needed for passing each interblade channel and each blade. Sizes of edge gaps are measured, angles of blades mounting are calculated, speed of flow in absolute motion at output and input of compressor is determined after measurements are completed synchronously.
EFFECT: improved precision of measurement.
2 cl, 5 dwg
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