Microwave measurements in gas turbine engines. PRINCIPLES, POSSIBILITY AND SCOPE

A.V. Maslovskiy, M.G. Bakulin

The principles of construction of the microwave system for measuring the radial clearances in gas turbine engines and the possibility of using microwave measurements to solve other problems practically. Describes the main factors influencing the characteristics of microwave measurements and the advantages of microwave systems to other systems of measurement of the radial clearance. The results of measurements using a microwave system for bench testing of aircraft turbine engine. Based on the analysis of the results of bench and laboratory tests determined the main area of application of microwave measurement systems.

Key words: microwave sensor, tip clearance, rotor blads, high pressure turbine.