AVIATION GLOSSARY / Aerodynamics
Mach number
The ratio of speed relative to the air to the local speed of sound. Sound speed varies with temperature, so a Mach number does not represent one fixed true airspeed.
Explore the science behind this termThe ratio of speed relative to the air to the local speed of sound. Sound speed varies with temperature, so a Mach number does not represent one fixed true airspeed.
Explore the science behind this term