Development of Advanced Capability Pressure Sensitive Paints

AeroChem Corporation proposes to develop a new multi-luminophor pressure-sensitive paints (PSPs) suitable for full-field surface measure-ments over pressure and temperature ranges of 200 to 2000 psf and 20 to 150 F, respectively. These paints will allow simultaneous measure-ment of pressure and temperature, eliminate requirements for wind-off references to compensate for nonuniform illumination, and providethe chemical and mechanical properties demanded for a variety of aerodynamic testing. Additionally, AeroChem will develop the hardware and software needed to properly decouple the emission characteristics of the various luminophors and to incorporate these new coatings into existing PSP measurement systems. The resulting product will be compatible with conventional emission integration and lifetime measurement systems and will meet the mandated measurement accuracy of1% for Phase I and 0.2% for Phase II. The new coating and system advancements will eliminate or minimize many difficulties associated with image registration and mapping. Two candiate dual-luminophor (pressure-temperature) coatings have already been developed by AeroChem- -both showing good emission band separation and measurement characteristics for atmospheric and sub-atmospheric pressure measurements with temperatures ranging between 80 and 150 F (a temperature range surpassing the variation specified in the Phase I RFP).