Investigations of the pressure fields on the oscillating wings by Pressure Sensitive Paint

Abstract

The paper reviews the main problems encountered during investigations of the oscillating pressure fields by the Pressure Sensitive Paint (PSP) technique. Measurement methodology, theoretical and experimental estimations of the PSP response time are presented. It is shown that currently available pressure sensitive paint formulations can be used for oscillation frequencies up to 20–30Hz. The experimental results obtained on the pitching wing models at Mach numbers from 0.45 to 0.9 are presented.