A great production by our friends at AVweb. Figured you might enjoy it.

Source: Wikipedia:
Supersonic speed is a rate of travel of an object that is larger than the speed of sound (Mach 1). For objects traveling in dry air of a temperature of 20 °C (68 °F) this speed is approximately 343 m/s, 1,125 ft/s, 768 mph or 1,236 km/h. Speeds greater than five times the speed of sound (Mach 5) are often referred to as hypersonic. Flight during which only some parts of the air around an object, such as the ends of rotor blades, reach supersonic speeds are called transonic. This occurs typically somewhere between Mach 0.8 and Mach 1.2.

I have also included a link to a Wikipedia article on the subject.

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Wikipedia Article http://en.wikipedia.org/wiki/Supersonic_speed

AVweb original post http://www.avweb.com/avwebflash/exclusivevids/ExclusiveVideo_SupersonicFlight_202736-1.html

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