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speed of sound

   Also found in: Medical, Acronyms, Encyclopedia, Wikipedia 0.01 sec.
The speed at which sound travels in a given medium under specified conditions. The speed of sound at sea level in the International Standard Atmosphere is 1108 ft/second, 658 knots, 1215 km/hour. See also hypersonic; sonic; subsonic; supersonic; transonic.
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Vapor cones like the one pictured here sometimes appear when aircraft approach the speed of sound.
Vapor trail by Crane, Cody / Science World
Hypersonics is the study of flight exceeding approximately five times the speed of sound, and this trial has successfully tested the flight and mission control systems that will be used in future experiments," Snowdon said.
Scientists test superjet technology in Australia by AFP / AFP Global Edition
Byline: ANI Washington, April 30 (ANI): Engineers at the Ohio State University, US, have designed control system software that can effectively guide a hypersonic experimental "scramjet", which is faster than the speed of sound.
Ultra fast "Scramjets" can be effectively guided by new control ... by Asian News International
 
 
 
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