This is an old revision of this page, as edited by MichaelJanich (talk | contribs) at 14:19, 29 August 2003 (+speed of sound). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
Revision as of 14:19, 29 August 2003 by MichaelJanich (talk | contribs) (+speed of sound)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)Any speed over the speed of sound, which is 1,225 km/h at sea level, is said to be supersonic. Many modern fighter aircraft are supersonic. The Concorde is a supersonic passenger aircraft, currently the only one flying. Speeds greater than 5 times the speed of sound are sometimes referred to as hypersonic.
See also: