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Turbine Wheel Relative Temperature at Freerun Conditions
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English
Abstract
Analytical predictions and laboratory measurements were made for the relative total temperature experienced at the tip diameter of a radial-inflow turbine used in an air turbine starter (ATS). The predictions showed that at freerun conditions the blade tip temperature would be significantly higher than the turbine inlet temperature. Tests to confirm this prediction were performed on an ATS modified to accept an optical pyrometer. The pyrometer was focused on the suction side of the blade at the tip radius. Blade temperature measurements conducted at the maximum attainable speed of the ATS verified the prediction to be within the error of the pyrometer measuring system.
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Citation
Mathis, D., "Turbine Wheel Relative Temperature at Freerun Conditions," SAE Technical Paper 921949, 1992, https://doi.org/10.4271/921949.Also In
References
- John, James E. A. Gas Dynamics Allyn and Bacon Boston 1969
- Allied-Signal Aerospace Co. “Model Specification Starters, Pneumatic, Aircraft Engine, USAF Type STU-1/A (AiResearch Models ATS100-422 and -422A Parts 3505230-1-1 and -2-1) 73-410423” December 1973