Abstract
Two quantitative optical measurements, which are Flight PSP measurement and wing deformation measurement for flight test, are introduced in this article.
Flight PSP measurement is an extension of the PSP measurement in a wind tunnel. PSP sheets were installed on the main wing and they were measured by a CCD camera inside cabin. It could measure 2-3kPa pressure variation, which was relatively small as PSP measurement target, due to involve background subtraction and introduction of 2-color PSP with temperature compensation capability.
Wing deformation measurement uses targets on a main wing and stereo cameras. It measures the 3-dimensional geometry of each markers, then calculates deformation from subtraction of ones between on ground and flight. It could measure about 50mm bending and 0.5° twist deformation in 1G flight quantitatively. It could also capture the deformation under 1.4G and 2G flight reasonably.
