Boom Supersonic’s XB1 aircraft, showcased at Farnborough, is set for its second test flight, aiming to break the sound barrier. By year-end, it is expected to reach 760 mph. Historically, only the Tupolev Tu-144 and Concorde existed, ceasing in 2003. Boom envisions flights from London to New York in 3.5 hours at over 1,300 mph, marking a significant step towards commercial supersonic travel after decades of anticipation.