This paper discusses recent advances in tip clearance measurement systems for turbine engines using capacitive probes. Real time measurements of individual blade pulses are generated using wideband signal processing providing 3 dB bandwidths of typically 5 MHz. Subsequent mixed-signal processing circuitry provide real-time measurements of maximum, minimum, and average clearance with latencies of one blade-to-blade time interval. Both guarded and unguarded probe configurations are possible with the system. Calibration techniques provide high accuracy measurements.


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    Title :

    High-Speed, capacitance-based tip clearance sensing


    Contributors:


    Publication date :

    2013-03-01


    Size :

    2500288 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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