Ma
What is a Mach?
Speed Unit
Definition
Mach is a dimensionless unit representing the ratio of an object's speed to the speed of sound. Mach 1 equals the speed of sound.
Popular Mach Conversions
Most common conversions from Mach
History
The Mach number is named after Austrian physicist Ernst Mach. It became crucial with the development of supersonic aircraft in the 20th century.
Common Uses
- Aviation and aerospace
- Supersonic and hypersonic research
- Ballistics
- Wind tunnel testing
Fun Facts
The Concorde cruised at about Mach 2
The SR-71 Blackbird could exceed Mach 3
Mach number varies with altitude and temperature