The goal of the program is to produce an economically viable, environmentally comparable, quiet hypersonic airplane.
Their vast symmetrical shapes outline hypersonic shock waves produced by colliding shells of stellar gas.
Moving at hypersonic speeds, it compresses the gas violently, and the gas heats up.
British Dictionary definitions for hypersonic
hypersonic
/ˌhaɪpəˈsɒnɪk/
adjective
1.
concerned with or having a velocity of at least five times that of sound in the same medium under the same conditions
Derived Forms
hypersonics, noun
hypersonic in Science
hypersonic
(hī'pər-sŏn'ĭk) Relating to or capable of speeds equal to or exceeding five times the speed of sound (Mach 5 and above). Compare subsonic, supersonic, transonic.