A Fiber Optic Probe for Gas Total Temperature Measurement in Turbomachinery

This paper describes the design, operation, construction, and demonstration of a new type of high-bandwidth unsteady temperature sensor based on fiber optics, and capable of operating in a high-speed multistage research compressor with flow representative of jet engine conditions. The sensing elemen...

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Bibliographic Details
Published in:Journal of turbomachinery 1995-10, Vol.117 (4), p.635-641
Main Authors: Kidd, S. R, Barton, J. S, Meredith, P, Jones, J. D. C, Cherrett, M. A, Chana, K. S
Format: Article
Language:English
Subjects:
Applied sciences
Continuous cycle engines: steam and gas turbines, jet engines
Engines and turbines
Exact sciences and technology
Industrial metrology. Testing
Mechanical engineering. Machine design
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Summary:This paper describes the design, operation, construction, and demonstration of a new type of high-bandwidth unsteady temperature sensor based on fiber optics, and capable of operating in a high-speed multistage research compressor with flow representative of jet engine conditions. The sensing element is an optical coating of zinc selenide deposited on the end of an optical fiber. During evaluation in aerodynamic testing, a 1 K gas temperature resolution was demonstrated at 9.6 kHz and an upper bandwidth limit of 36 kHz achieved.
ISSN:0889-504X
1528-8900
DOI:10.1115/1.2836582