Abstract
A sprayable fast pressure-sensitive paint (PSP) has been developed to measure pressure fluctuation on models made of non-aluminum-alloy materials with complex shapes. It is important to distribute a pressure-sensitive dye only over the surface to improve responsiveness of the fast PSP. In this study, fast PSP's were prepared by applying the solution of a pressure-sensitive dye onto a pre-coated porous binary layer and the effect of the solvents of dye solution was investigated. By choosing a polymer dissolving solvent for the dye solution, one could succeed to develop a PtTFPP based PSP with a pressure response time of 17.8 μs at 90 % pressure rise to a step change of pressure. This was about 10 times faster than a previous fast PSP (191μs) using a polymer dissolving solvent for dye solution.
