Boom Supersonic XB-1 jet breaks sound barrier over Mojave Desert on first test flight (video).
A civilian jet has achieved an aviation milestone, breaking the sound barrier for the first time during a test flight over the Mojave Desert in California. Boom Supersonics’ XB-1 aircraft, flown by Tristan “Geppetto” Brandenburg, entered the supersonic corridor on Tuesday and reached an altitude of 35,290 feet before accelerating to more than 1,200kph – …