[American Institute of Aeronautics and Astronautics 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition - Nashville, Tennessee ()] 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition - Background Oriented Schlieren Applied to Study Shock Spacing in a Screeching Circular JetClem, Michelle; Zaman, Khairul; Fagan, Amy