What is Transonic?
[[File:Bell X-1 in flight.jpg|thumb|220px|The Bell X-1, a plane built for transonic flight]] '''Transonic''' means breaking the sound barrier by travelling faster than the speed of sound (1,236 kph or 768&nbsp;mph). The speed of flight is divided into four groups based on speed. *[[Subsonic]] *'''Transonic''' *[[Supersonic]] *[[Hypersonic]] Transonic means going from subsonic to supersonic. Subsonic ends and supersonic begins at [[mach]] 1, so transonic goes from mach 0.8 to 1.2. When you are going through transonic speeds, [[Drag (physics)|drag]] increases and it is really hard to go any faster. This is the [[sound barrier]]. [[Category:Aviation]] [[Category:Sound]] {{science-stub}}