NASA Captures Supersonic Shock Interaction

One of the greatest challenges of the fourth phase of Air-to-Air Background Oriented Schlieren flights, or AirBOS flight series was timing.

NASA Captures Supersonic Shock Interaction

https://www.nasa.gov/centers/armstrong/multimedia/imagegallery/Schlieren/f4_p3_cam_plane_drop_new_2-22-19.html