hypersonic

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hy·per·son·ic

(hī'pĕr-son'ik),
Pertaining to or characterized by supersonic speeds of Mach 5 or greater. Although any speed above the speed of sound may be referred to as supersonic, speeds of Mach 5 or greater are specifically referred to as hypersonic.
[hyper- + L. sonus, sound]
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References in periodicals archive ?
These tiny jets of air can blast faster than the speed of sound, Gekle found.
The French side can offer experience from Concorde, while Japan has successfully tested an engine that can reach more than five times the speed of sound, reports The Associated Press.
The only hypersonic aircraft in use is the space shuttle, which flies at 25 times the speed of sound upon re-entering the earth's atmosphere.
Little data was available for theoretical speed of sound at 9,000 psig.
Then, in October 1997, he led a team that broke the speed of sound.
Speed of sound was correlated with both type 1 diabetes status and current smoking.
The first Aim-120 missile fired at the speed of sound from an F-22 Raptor was launched during a test mission from Edwards Air Force Base in California.
The objectives of this research were to (1) compare the speed of sound in different media, such as air and water, (2) pass sound waves from a gas to a liquid, to determine the wavelength and frequency of the speed of sound, (3) to determine whether or not the speed of sound depends on frequency, and (4) to compare two different methods of calculating the speed of sound.
Subsonic simply means that the projectile is traveling below the speed of sound.
A week after the Challenger exploded in 1986, Ronald Reagan introduced the country to the hydrogen-powered National Aero-Space Plane (NASP), "a new Orient Express that could, by the end of the next decade, take off from Dulles Airport and accelerate up to 25 times the speed of sound, attaining low Earth orbit or flying to Tokyo within two hours.
Thirty-two megajule is equivalent to a firing speed of Mach 8 or eight times the speed of sound.
According to the Daily Mail, after jumping from 128,100 feet above the Earth, Felix Baumgartner broke the speed of sound after 34 seconds of free fall, ultimately accelerating to as high as 833.