1:33:27 Supersonic Airplane | Breaking the Sound Barrier | Sonic Boom Jet | Documentary English Subtitles
History pertaining to the challenge of breaking the FEARED sound barrier
Sound travels at about 760 miles per hour, or 340 meters per second and about 661 knots on an average day at sea level. And sometimes, you can almost see it. Going close to that speed through. Supersonic Airplane | Breaking the Sound Barrier | Sonic Boom Jet | Documentary English Subtitles . Planes creating sonic booms and breaking the sound barrier.