Boom Supersonic’s XB-1 demonstrator plane just went supersonic in the skies over California’s Mojave Desert, making it the first civil aircraft to break the sound barrier. The American startup’s plane ...

The world's militaries have a plethora of planes in use, and most of them have one to two engines. That's true of older fighter jets like the Mirage F1, and it's true of the newest F-35 Lightning II ...

Faster planes require more fuel, and alternatives may not be the climate solution the industry hopes for. Boom Supersonic broke the sound barrier in a test flight of its XB-1 jet last week, marking an ...

Boom Supersonic’s XB-1 aircraft has become the first independently developed jet to break the sound barrier, bringing supersonic passenger planes (back) closer to reality. Reaching over 35,000 feet, ...

Earlier this month, a demonstrator aircraft for what could be the first new civil supersonic plane to be launched since the 1960s took to the skies. It’s a milestone moment in the highly anticipated ...

Two weeks ago, Boom Supersonic’s XB-1 demonstrator plane made history when it broke the sound barrier over the continental United States, reaching 750 miles per hour (Mach 1.12) near Barstow, ...

The X-1’s fuselage was designed to resemble a .50 caliber bullet—one of the only shapes known to have stable flight at supersonic speeds. The Bell X-1 hangs today from the ceiling of the National Air ...