The Differences Between Hypersonic and Supersonic

We're going to talk about hypersonic flow today. Other than the fact that hypersonic means real fast I don't think that a lot of people understand what hypersonics is about and why it's special. There's really only three well-defined mach machines right. Subsonic where you're less than the speed of sound. Sonic and at the speed ofsound and then supersonic. Think of hypersonic like transonic flow. It depends on the shape of your airplane. When part of your airplane is at supersonic flow or is it subsonic. We can't really put a number on it. But when you start getting at the transonic