Supersonic speed

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A United States Navy F/A-18E/F Super Hornet in transonic flight

Supersonic speed is a rate of travel of an object that exceeds the speed of sound (Mach 1). For objects traveling in dry air of a temperature of 20 °C (68 °F) at sea level, this speed is approximately 343 m/s, 1,125 ft/s, 768 mph, 667 knots, or 1,235 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 1.23

• See also: Wikipedia

• Related: Hypersonic speed, Transonic speed, Sonic boom, Whitcomb area rule, Supersonic airfoils, Supersonic aircraft

"Can We Ever Fly Faster Speed of Sound", October 1... "Can We Ever Fly Faster Speed of Sound", October 1944, Popular Science books.google.com/.../books?id=PyEDAAAAMBAJ&pg=PA72&dq=motor+gun+boat&hl=en&ei=LxTqTMfGI4-bnwfEyNiWDQ&sa=X&oi=book_result&ct=result&resnum=6&ved=0CEIQ6AEwBQ#v=onepage&q=motor%20gun%20boat&f=true - Web

"Britain Goes Supersonic", January 1946, Popular S... "Britain Goes Supersonic", January 1946, Popular Science books.google.com/.../books?id=NSEDAAAAMBAJ&pg=PA114&dq=popular+science+January+1946&hl=en&ei=vb7kTIbiC4uQnwfUwpT4BQ&sa=X&oi=book_result&ct=result&resnum=2&sqi=2&ved=0CDQQ6AEwAQ#v=onepage&q=popular%20science%20January%201946&f=true - Web

MathPages - The Speed of Sound MathPages - The Speed of Sound www.mathpages.com/home/kmath109/kmath109.htm - Web

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Sound Sound online.cctt.org/.../lessonsound.asp - Web

Supersonic sound pressure levels Supersonic sound pressure levels www.makeitlouder.com/Decibel%20Level%20Chart.txt - Web

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