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Acta Aeronautica et Astronautica Sinica. 2022, (09) Core

A dynamic measurement method of blade tip clearance based on microwave phase difference rangingChinese Full TextEnglish Full Text (MT)

NIU Guangyue;DUAN Fajie;ZHOU Qi;LIU Zhibo;State Key Laboratory of Precision Measuring Technology and Instruments,Tianjin University;

Abstract: Non-contact high-precision online measurement of blade tip clearance is the key to efficiency and safety of aeroengines.However,the traditional static measurement method based on microwave faces the problem of precision decline under the influence of direct current noise,distance measurement ambiguity,and variation of signal sampling time points.Therefore,a dynamic measurement method of blade tip clearance is proposed based on microwave phase difference ranging.A measurement signal model is esta... More
Keywords：

blade tip clearance; dynamic measurement; distance measurement; microwave device-millimeter wave; phase difference; rotating blade; correlation coefficient; aeroengine;

  • Series：

    (C) Architecture/ Energy/ Traffic/ Electromechanics, etc

  • Subject：

    Aeronautics and Astronautics Science and Engineering

  • Classification Code：

    V23

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