Jeremy Haddock
404 posts



Boom is supersonic. On Jan. 28, 2025 at 8:31am PST / 16:31 GMT, XB-1 broke the sound barrier. Chief Test Pilot Tristan “Geppetto” Brandenburg safely and successfully achieved supersonic speed in XB-1, the first civil supersonic jet made in America. ✅New top speed: Mach 1.122 (652 KTAS) ✅New max altitude: 35,290 ft. ✅Flight time: 34 minutes ✅Airspace: Bell X-1 Supersonic Corridor and the Black Mountain Supersonic Corridor in Mojave, CA XB-1 demonstrates that Boom has the team, technology, and tools to deliver supersonic commercial travel with Overture, cutting travel times in half. Congratulations to the Boom team on making aviation history!




Symphony, the purpose-built turbofan optimized for supersonic flight, is being built supersonically. ✔️12.22: Symphony announced ✔️6.23: Engine architecture unveiled ✔️10.23: Conceptual Design Review completed ✔️6.24: Rig testing underway ✔️2025: Engine core operational Read more: boomsupersonic.com/flyby/boom-sup…















