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In aerodynamics, a hypersonic speed is one that exceeds five times the speed of sound, often stated as starting at speeds of Mach 5 and above. [1]
The first manufactured object to achieve hypersonic flight was the two-stage Bumper rocket, consisting of a WAC Corporal second stage set on top of a V-2 first stage. In February 1949, at White Sands, the rocket reached a speed of 8,290 km/h (5,150 mph), or about Mach 6.7. [2]
A hypersonic weapon is a weapon capable of travelling at hypersonic speed, defined as above Mach 5, or above 5 times the speed of sound. [1] Below Mach 1, weapons would be characterized as subsonic, and above Mach 1, as supersonic. Typical Low Earth Orbit atmospheric re-entry speed is Mach 25. [2]
Hypersonic missiles typically launch a warhead that travels at more than five times the speed of sound or about 6,200 km per hour (3,850 mph), often manoeuvring at rel ...
The NASA X-43 was an experimental unmanned hypersonic aircraft with multiple planned scale variations meant to test various aspects of hypersonic flight.It was part of the X-plane series and specifically of NASA's Hyper-X program developed in the late 1990s. [1]
The alliance says its speed has been put at Mach 8, or almost 9,900 kilometers per hour (6,138 mph). Hypersonic is defined as any speed above Mach 5 (3,836 mph).
DARPA once viewed X-51 as a stepping stone to Blackswift, [9] a planned hypersonic demonstrator which was canceled in October 2008. [10] In May 2013, the U.S. Air Force planned to apply X-51 technology to the High Speed Strike Weapon (HSSW), a missile similar in size to the X-51. The HSSW was expected to fly in 2020 and enter service in the mid ...
The US has signalled its intention not to press ahead with the purchase of a hypersonic missile system following problems during testing. ... up to ten times the speed of sound, which is around 8 ...