When the experimental XB-1 aircraft broke the sound barrier three times during its first supersonic flight on 28 January, it did not produce a sonic boom audible from the ground, according to US ...

NASA also gathered sound data from the test flight. Boom Supersonic analyzed the data and found that no audible sonic boom reached the ground. This is notable, because supersonic flights that make ...

MOSCOW, December 25. /TASS/. The first batch-produced fighter Sukhoi Su-57 will be used for testing hypersonic air-launched weapons at the flight test center in Akhtubinsk, a source in the defense ...