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Mach refers to the speed of sound. A plane that travels at Mach 2 means that it travels twice the speed of sound in air. The actual speed will vary a bit depending on the altitude.
Mach number is a measure of relative speed. It is the speed of something relative to a medium, usually air, and divided by the speed of sound in that medium: : : is the Mach number : is the velocity of the object relative to the medium used and : is the velocity of sound in the medium Mach number is the number of times the speed of sound an object or a duct, or the fluid medium itself, move relative to each other. It is named afteran Austrian physicist Ernst Mach.
What else can I help you with?
Who invented the mach number?
Ernst Mach .
What happens to Critical Mach number with altitude?
Critical Mach Number has nothing (directly) to do with altitude. Mach Number has everything to do Temperature,
What is the speed in mph in mach 0.8?
Mach 0.8 = about 593.2 mph
How fast in mach 6 in mph?
Mach 6 is about 4,449.3 mph
Mach speed is how many miles?
Mach 1 is the speed of sound. 768 miles per hr. Mach 2 is twice that & so on.
