On its 12th test flight, the Boom XB-1 prototype broke the sound barrier ... speeds of up to Mach 1.7, similar to service that the Concorde offered before it retired in 2003.

Today, for the first time since Concorde was retired in 2003, a commercial-type aircraft, the XB-1, flew supersonic, touching just over Mach 1.1 three times during its one-half-hour test flight ...

Boom Supersonic's XB-1 is the first civilian aircraft to achieve the feat since the British-French supersonic airliner, which was retired in 2003. The XB-1 broke the sound ... to Mach 1.1 (844mph ...

When planes exceed Mach 1 (the speed of sound, or about 767 miles per hour—1,234 kilometers/hour for those using the metric ...

allowed the aircraft to reach speeds exceeding Mach 1, a feat not achieved by a commercial supersonic aircraft since the retirement of the Concorde in 2003. The successful supersonic flight of the ...

Some 11.5 minutes into the flight — the 12th overall for the XB-1 — at an altitude of around 35,000 feet (10,668 meters), the test plane exceeded Mach 1, the speed of sound, marking the first ...

Plans to revive supersonic air travel have taken a leap forward after a test plane broke the sound barrier above the Mojave Desert in California. A demonstrator aircraft, known as the XB-1, surged ...

The XB-1 reached Mach 1.122 when it broke the sound barrier for the first time ... gap left after the Concorde made its final flight in 2003 with its Overture aircraft. "XB-1's supersonic flight ...

Supersonic planes will burn significantly more fuel than current aircraft, resulting in higher emissions of carbon dioxide, ...

If all goes well, the piloted demonstrator craft will exceed Mach 1 — the speed of sound — about 25 minutes ... which was retired in 2003. The XB-1 first got off the ground in March 2024.

The sleek white prototype, with a blue-and-yellow tail assembly, broke the sound barrier on the first pass in the test airspace, reaching a speed of about Mach 1.11. Then Brandenburg flew back ...