A blade by blade tip clearance measurement system for gas turbine Applications

    A.G. Sheard, B. Killeen Rotadata Ltd, Derby, UK. ASME, 1995.

    When engine manufacturers require the measurement to be made over every blade during live engine tests, system reliability, ruggedness, and ease of operation are of primary importance. This paper describes a tip clearance measurement system that can measure clearance over every blade around a rotor. The measurement system concept is presented, and the system design described in detail. Commissioning of the measurement system on a facility, and the results obtained are discussed. An analysis of the system performance during the commissioning trials concludes the paper.


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