It is known that capacitance-sensing, rotor-blade-tip-clearance measurement systems suffer from a strong dependency on probe tip temperature and humidity. A novel in-place recalibration technique partly overcomes this problem through a simple modification of the electronics that permits a scale factor correction. The technique is used to reduce the errors in a commercial system by more than 50 percent up to a temperature of 370 C (700 F). A probe design is proposed to further raise the maximum temperature capability of the measurement system.


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    Title :

    An in-place recalibration technique to extend the temperature capability of capacitance-sensing, rotor-blade-tip-clearance measurement systems


    Contributors:

    Conference:

    Society of Automotive Engineers, Aerospace Meeting ; 1978 ; San Diego, CA


    Publication date :

    1978-11-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English