Optical heat flux gauge

Thermal measuring and testing – Heat flux measurement

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374 30, G01K 1700

Patent

active

050059840

ABSTRACT:
A heat flux gauge comprising first and second thermographic phosphor layers separated by a layer of a thermal insulator, wherein each thermographic layer comprises a plurality of respective thermographic sensors in a juxtaposed relationship with respect to each other. The gauge may be mounted on a surface with the first thermographic phosphor in contact with the surface. A light source is directed at the gauge, causing the phosphors to luminesce. The luminescence produced by the phosphors is collected and its spectra analyzed in order to determine the heat flux on the surface. First and second phosphor layers must be different materials to assure that the spectral lines collected will be distinguishable.

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Bruce W. Noel et al., "A Proposed Method for Remote Thermometry and Turbine Engine", Los Alamos National Laboratory document LA-UR-85-2379 (submitted to AIAA/SAE/ASME 21st Joint Propulsion Conference, Monterey, Calif., Jul. 8-10, 1985).
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Bruce W. Noel et al., "The Design and Characterization of a Prototype Optical Heat-Flux Gauge", Los Alamos National Laboratory document LA-11408-MS, issued Jan. 1989 (submitted to a conference Jun. 7, 1989).

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