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Measurement of unsteady gas temperature with optical fibre Fabry-Perot microsensors

Abstract:
We describe the application of thin-film optical fibre Fabry-Perot (FFP) microsensors to high-bandwidth measurement of unsteady total temperature in transonic gas flows. An aerodynamic probe containing two temperature sensitive FFP microsensors was deployed in the rotor exit flow region of a gas turbine research rig. Measurements reveal gas temperature oscillations typically 4 K peak to peak at the blade passing frequency of 10 kHz with components to the third harmonic detected in the power spectrum of the temperature signal.

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Publisher copy:
10.1088/0957-0233/13/5/308

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Journal:
Measurement Science and Technology
Volume:
13
Issue:
5
Pages:
706-712
Publication date:
2002-05-05
DOI:
EISSN:
1361-6501
ISSN:
0957-0233
URN:
uuid:375a74c4-a575-4a93-824a-105014ef0252
Source identifiers:
147402
Local pid:
pubs:147402

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