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speed of sound
Definição1
The speed of which the mechanical vibrations of sound travel in an elastic medium. Sound travels in air, under standard atmospheric conditions, at a rate of 760 miles per hour, 340 meters per second, or 1,116 feet per second. The speed of sound is affected by the density of the medium trhough which it travels. In the air this is determined by the air temperature.
Fonte1
CRANE, Dale (ed.). Dictionary of aeronautical terms. 2nd ed. Renton: ASA, 1991.
Fonte2
ARAÚJO, João Richard Barcelos. Inglês técnico: técnicos em manutenção de aeronaves. [S.l]: [s.n.], [200-]. 100 p.
Fonte3
INTERNATIONAL CIVIL AVIATION ORGANIZATION. Manual on the Regulation of International Air Transport. 2nd ed. Montreal: ICAO, 2004. (Doc. 9626)
Contexto
A subsonic aircraft means an aircraft incapable of sustaining level flight at speeds exceeding a Mach number of 1 (i.e. the speed of sound).
Subárea1
Aerodynamics
Português
velocidade do som
Imagem

 F-22 when crossing the speed of sound.

F-22 when crossing the speed of sound.

Fonte: http://sk.wikipedia.org/wiki/R%C3%BDchlos%C5%A5_zvuku