*** Posted by Chris Gilliland ***
Terminology:
Does Super Sonic Flight and Breaking the Sound Barrier imply the same meaning. Super Sonic does have a more polished sound to it?? At sea level what airspeed would you have to attain in order to "break the sound barrier". Preferably in miles per hour or mathmatical formula to translate knots to kilometers per hour/miles per hour. Does Mach 2 imply your traveling twice this speed? I've heard/read in order to break the sound barrier you would have to exceed approximately 725 miles per hour at sea level.

Thanks,
Chris