Mach number

Noun

Meaning

the ratio of the speed of a moving body to the speed of sound

Synonyms

Hypernyms

Examples

An aircraft Machmeter or electronic flight information system ( EFIS ) can display Mach number derived from stagnation pressure ( pitot tube ) and static pressure. Source: Internet

As this could have a detrimental effect on the integrity of the engine and/or airframe, the fuel control system must reduce engine fuel flow to stabilize the flight Mach number and, thereby, air intake temperature to reasonable levels. Source: Internet

As the Mach number is a dimensionless quantity rather than a unit of measure, with Mach, the number comes after the unit; the second Mach number is "Mach 2" instead of "2 Mach" (or Machs). Source: Internet

First, the analytic equations for the oblique shock angle become nearly independent of Mach number at high (~>10) Mach numbers. Source: Internet

For very high Mach number (M > 25) simulations, models can be launched into a counter-flowing gas stream generated by the shock tube. Source: Internet

Generally, NASA defines "high" hypersonic as any Mach number from 10 to 25, and re-entry speeds as anything greater than Mach 25. Aircraft operating in this regime include the Space Shuttle and various space planes in development. Source: Internet

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