Pressure and Temperature Sensitive Paints

The foundations of pressure- and temperature-sensitive paints (PSP and TSP) for aerodynamic measurements are the oxygen and thermal quenching mechanisms of thin luminescent polymer coatings applied to a solid surface. The technical aspects of PSP and TSP include the photophysics, paint formulations, calibration, measurement systems, image/data processing, measurement uncertainty, and applications in wind tunnel testing. Since PSP and TSP as luminescent molecule sensors have similar measurement systems and image/data processing procedures, they are companion techniques in applications. PSP and TSP have become powerful measurement techniques to obtain high-resolution surface pressure and temperature (heat flux) fields on air vehicle models in various wind tunnels. This article provides a concise exposition of the main technical aspects of PSP and TSP. Keywords: experimental aerodynamics; image-based measurement; luminescence; pressure-sensitive paint (PSP); temperature-sensitive paint (TSP); wind tunnel

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