Explanation:
Mach number (M or Ma)
Mach Number |
Type of flow |
M < 1 |
Subsonic |
M = 1 |
Transonic |
M > 1 |
Supersonic |
M > 5 |
Hypersonic |
Students get confused between supersonic and hypersonic if M > 1.
M > 1 - Supersonic
M > 5 - Hypersonic