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Hypersonic speed

In aerodynamics, a hypersonic speed is one that greatly exceeds the speed of sound, often stated as starting at speeds of Mach 5 and above. In aerodynamics, a hypersonic speed is one that greatly exceeds the speed of sound, often stated as starting at speeds of Mach 5 and above. The precise Mach number at which a craft can be said to be flying at hypersonic speed varies, since individual physical changes in the airflow (like molecular dissociation and ionization) occur at different speeds; these effects collectively become important around Mach 5-10. The hypersonic regime is often alternatively defined as speeds where Cp and Cv are no longer able to be reasonably considered constant.

[ "Classical mechanics", "Flow (psychology)", "Thermodynamics", "Aerospace engineering", "Mechanics", "Hypersonic flight", "Blunted nose", "hypersonic flow", "Expansion tunnel", "hypersonic vehicle" ]
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