Ask an Explainer
What are the difference between transonic and hypersonic flow?
Transonic flow is where air flows above, at, and below the speed of sound at the same time at different points on an object. For example, the air on a wing flows faster, so that air could be supersonic while the air flowing over the body of an airplane could be subsonic. Hypersonic flying above Mach 5, or nearly five times the speed of sound.