Temperature Cancellation Method of Motion-Capturing Pressure-Sensitive Paint System

Motion-capturing pressure-sensitive paint system uses two luminescent outputs to extract the pressure field on an aerodynamic object. This uses a luminescent imaging technique to relate the luminescent output to the pressure. In the previous study, this system is applied to capture the time-resolved unsteady pressure fields on a fluttering airfoil, and a bullet-shaped model. Pressure-sensitive paint (PSP) has a temperature dependency, which is a major error source for the PSP measurement. Motion-capturing PSP system also involves the temperature dependency of PSP itself. In the presentation, we propose a temperature-cancellation method of the motion-capturing PSP system. This method does not require a separate temperature measurement for the temperature correction that is advantage for capturing the pressure field on a moving object.