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heat flux microsensor measurementsA thin-film heat flux sensor has been fabricated on a stainless steel substrate. The thermocouple elements of the heat flux sensor were nickel and nichrome, and the temperature resistance sensor was platinum. The completed heat flux microsensor was calibrated at the AEDC radiation facility. The gage output was linear with heat flux with no apparent temperature effect on sensitivity. The gage was used for heat flux measurements at the NASA Langley Vitiated Air Test Facility. Vitiated air was expanded to Mach 3.0 and hydrogen fuel was injected. Measurements were made on the wall of a diverging duct downstream of the injector during all stages of the hydrogen combustion tests. Because the wall and the gage were not actively cooled, the wall temperature reached over 1000 C (1900 F) during the most severe test.
Document ID
19930038315
Document Type
Conference Paper
Authors
Terrell, J. P.
(NASA Langley Research Center Hampton, VA, United States)
Hager, J. M.
(Vatell Corp. Christiansburg, VA, United States)
Onishi, S.
(NASA Langley Research Center Hampton, VA, United States)
Diller, T. E.
(Virginia Polytechnic Inst. and State Univ. Blacksburg, United States)
Date Acquired
August 16, 2013
Publication Date
December 1, 1992
Subject Category
INSTRUMENTATION AND PHOTOGRAPHY
Report/Patent Number
AIAA PAPER 92-5038
Meeting Information
AIAA, International Aerospace Planes Conference(Orlando, FL)
Distribution Limits
Public
Copyright
Other