aero2 - greater than 5 the name used is hypersonic flow...

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1 The Mach number is a measure of the ratio of the airplane speed to the speed of  sound. In other words, it is a number that may relate the degree of warning that air may  have to an airplane approach. The Mach number is named after Ernst Mach, an  Austrian professor (1838 to 1916).  For Mach numbers less than one, one has subsonic   flow, for Mach numbers greater than one, supersonic flow, and for Mach numbers
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Unformatted text preview: greater than 5 the name used is hypersonic flow. Additionally, transonic flow pertains to the range of speeds in which flow patterns change from subsonic to supersonic or vice versa, about Mach 0.8 to 1.2. Transonic flow presents a special problem area as neither equations describing subsonic flow nor those describing supersonic flow may be accurately applied to the regiom [...
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