High-Accuracy Turbine Performance Measurements in Short-Duration Facilities

[+] Author and Article Information
C. W. Haldeman, M. G. Dunn

The Ohio State University Gas Turbine Laboratory, Columbus, OH 43235

J. Turbomach 120(1), 1-9 (Jan 01, 1998) (9 pages) doi:10.1115/1.2841382 History: Received February 01, 1996; Online January 29, 2008


This paper describes work done in preparation for the measurement of stage efficiency in a short-duration shock-tunnel facility. Efficiency measurements in this facility require knowledge of the flow with path pressure and temperature, rotating system moment of inertia, and mass flow. This paper describes in detail and improved temperature compensation technique for the pressure transducers (Kulite) to reduce thermal drift problems, and measurements of the rotating system moment of inertia. The temperature compensation has shown that the conversion to pressure is accurate to within 0.689 kPa (0.1 psi) over the 40°C test range. The measurement of the moment of inertia is shown to be accurate to within 0.7 percent of the average value.

Copyright © 1998 by The American Society of Mechanical Engineers
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