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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 ... - Mach Number
Introduction and definition of the Mach Number ... The Mach Number is a dimensionless value useful for analyzing fluid flow dynamics problems where compressibility is a significant ...
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Mach Number
Encyclopedia Article
Mach Number, in aerodynamics and fluid mechanics, the ratio of the speed of an object, usually an airplane, through a fluid (gas or liquid) to the speed of sound in the fluid. The unitless Mach number was named after the Austrian physicist and philosopher Ernst Mach. An airplane traveling at less than Mach 1 is traveling at subsonic speeds; at about Mach 1, transonic, or approximately the speed of sound; and greater than Mach 1, supersonic speeds. An aircraft flying at Mach 2, for example, is traveling at twice (or 200 percent) the speed of sound.
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