FIELD: measuring technology.
SUBSTANCE: invention refers to method of measuring a blade profile and a radial clearance in the turbine of a running gas turbine engine. The technical effect is ensured by that in the method of measuring the blade profile and the radial clearance in the turbine of a running gas turbine engine, the second amplitude-modulated electric signal is additionally formed with isolating and measuring a phase shifting and a shift direction or time intervals of low-frequency envelope of two signals with their values determine profile variations from the original form and a clearance from a blade head with simultaneous recording of temperature, gas-dynamic and centrifugal forces resulting in said variations. Besides there is involved measuring the dielectric permeability, comparing the specified values to those before testing and used to consider ecological and operational safety and suitability to flight operation.
EFFECT: higher effectiveness and information value of the method.
2 dwg
