Abstract
The objective of the present work is to study the feasibility of the pressure-sensitive paint (PSP) technique for pressure measurements on rotating objects. The PSP used was composed of a porphyrin derivative (H 2TFPP) and a silica-gel thin-layer chromatography plate. The illumination sources were arrays of blue LED, and the detecter was a CCD camera with 12 bit intensity resolution. In the experiments, the shutter of the CCD camera was left open and a rotating model was flashed repeatedly as it came into position, building up a phase-averaged image on the CCD camera. The present preliminary experiments show that the deformation of the model under air loads seriously affects the PSP measurements on rotating bodies.
