Abstract
The pressure sensitive paint (PSP) has a potential for high-frequency response. To show the feasibility of a PSP measurement system, the Cassegrain type optical probe was used. High-frequency pressure fluctuations at frequencies on the order of kilohertz produced by chopping an underexpanded jet were measured using the Cassegrain optics pressure measurement system. Pressure traces obtained by the present system and their power spectra are compared with those by a conventional pressure transducer. The agreement between those traces is quite good. The results shows that PSP measurement system has the frequency response on the order of kilohertz.
