A Blade-by-Blade Tip Clearance Measurement System for Gas Turbine Applications
- 1 April 1995
- journal article
- Published by ASME International in Journal of Engineering for Gas Turbines and Power
- Vol. 117 (2) , 326-331
- https://doi.org/10.1115/1.2814098
Abstract
It is difficult to make a reliable measurement of running clearance in the hostile environment over the blading of a modern gas turbine. 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 compressor test facility, and the results obtained are discussed. An analysis of system performance during the commissioning trials concludes the paper.Keywords
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