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.

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

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The Concorde cruised at about Mach 2

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The SR-71 Blackbird could exceed Mach 3

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Mach number varies with altitude and temperature

All Mach Conversions