Boom’s XB-1 Achieves Supersonic Flight in Major Milestone

Boom Supersonic’s XB-1 demonstrator successfully reached supersonic speeds, marking a key step toward the development of the Mach 1.7 Overture airliner. The aircraft, piloted by Tristan “Geppetto” Brandenburg, surpassed Mach 1 three times during its 12th test flight on Jan. 28, achieving a peak speed of Mach 1.12 at 34,000 feet in California’s Mojave Desert.

The test, conducted within the R-2508 restricted airspace, focused on flutter evaluation and handling characteristics at 360 knots equivalent airspeed (KEAS). Accompanied by T-38 and Mirage F1 chase aircraft, the XB-1 completed three high-speed passes before safely landing at Mojave after a 34-minute flight.

This milestone follows months of incremental testing since the XB-1’s first flight in March 2024. Prior to its supersonic debut, the aircraft reached Mach 0.95 and 29,481 feet on Jan. 10, expanding its dynamic pressure envelope. Brandenburg described the Mach 1.12 flight as smooth and predictable, emphasizing the aircraft’s improved performance at higher speeds.

Boom highlights several breakthrough technologies tested on the XB-1, including a digital-optimized aerodynamic design, composite airframe structures, and an augmented reality vision system. CEO Blake Scholl called the achievement a pivotal moment, affirming Boom’s commitment to reviving commercial supersonic travel.

A final XB-1 supersonic flight is planned for early February, potentially reaching Mach 1.3. Boom is collaborating with NASA to capture schlieren images of the aircraft. Meanwhile, development accelerates on Overture, with its Symphony engine prototype expected to run later this year and airframe construction commencing in 18 months.