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Mach number
- speed of object relative to sound: the speed of an object relative to the speed of sound. An aircraft travelling at twice the speed of sound has a Mach number of 2.
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Ernst Mach (Corbis)Ernst Mach (Corbis)
Ernst Mach
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Numbers and Numerals
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  • Mach number - Wikipedia, the free encyclopedia

    Mach number (Ma or M) (generally pronounced /ˈmɑːk/, sometimes /ˈmɑːx/ or /ˈmæk/) is the speed of an object moving through air, or any fluid substance, divided by the speed ...

  • Mach Number

    As an aircraft moves through the air, the air molecules near the aircraft are disturbed and move around the aircraft. If the aircraft passes at a low speed, typically less than ...

  • Critical Mach number - Wikipedia, the free encyclopedia

    In aerodynamics, the critical Mach number (Mcr) of an aircraft is the lowest Mach number at which the airflow over a small region of the wing reaches the speed of sound.

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