On Dec 26, 1975 – Tu-144, the world's first commercial supersonic aircraft, surpassing Mach 2, went into service. https://t.co/8jmus0aeHc
https://ipfs.io/ipfs/Qmc2nSqXipJndJ6ro8Lu1Th7kMhS3RLgutXe2qobmsfcJb
Posted via D.Buzz
On Dec 26, 1975 – Tu-144, the world's first commercial supersonic aircraft, surpassing Mach 2, went into service. https://t.co/8jmus0aeHc
https://ipfs.io/ipfs/Qmc2nSqXipJndJ6ro8Lu1Th7kMhS3RLgutXe2qobmsfcJb
Posted via D.Buzz
That is the Mach thing?
Posted via D.Buzz
Unit of sound velocity
Posted via D.Buzz