An endoscopic imaging system for turbine engine pressure sensitive paint measurements

A fiber-optic endoscopic imaging system for mapping the surface pressure of turbine engine parts coated with pressure sensitive paint has been developed. Fluorescence intensity measurements collected from a ruthenium bathophenanthroline pressure sensitive paint sample under different pressure and temperature settings are presented. Moreover, a simple analysis for the errors resulting from the shift in the pressure sensitive paint fluorescence intensity due to temperature artifacts is given.