The Schlieren apparatus allows students tosee density gradients as variations in intensity of illumination. This allowsthem to see supersonic air flow patterns around models. A monochrome Schlieren apparatus for use with theIntermittent Supersonic Wind Tunnel. The apparatus includes digital imaging equipment to record the images this isuseful when using an intermittent supersonic wind tunnel. The video monitor isparticularly useful to display the images to groups of students. It also clearly showsshock waves and expansions, and students can compare their positions and angleswith values predicted by theory. The imagingequipment can capture still images and any real-time changes in the image. The mirrors and lenses are of high optic standards to reduce any possibility of optic distortions of the images.
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