Pressure sensitive paint, or PSP, is an image-based global surface pressure measurement technique based on the oxygen-quenching mechanism. PSP is essentially a coating designed to change luminescent intensity based on the surface oxygen concentration, which is directly proportional to the surface pressure.  PSP provides surface pressure data with an extremely high spatial-resolution (one data point per pixel). This technique is non-contact and minimally intrusive, which provides a clear advantage to conventional local pressure measuring sensors. In the past, PSP has been successfully used to extract surface pressure data in a variety of experiments such as impinging jets, airfoils, wings, delta wings, hollow-cone-flare cylinders, etc.In addition to surface pressure, PSP can be used to extract skin friction data as an inverse problem.