by Douglas Messier
Managing Editor

Boom Supersonic’s recent rollout of its XB-1 supersonic demonstrator aircraft marked a milestone in an accelerating race to revive an era of civilian supersonic travel that ended when the Concorde jetliner was retired in 2003.

XB-1, aka Baby Boom, is set to begin flight tests next year from the Mojave Air and Space Port in California. The Mach 2.2 (2,717 km/h, 1,688 mph) vehicle is the precursor to Boom’s 55-seat Overture airliner, which is scheduled to begin carrying passengers in 2029.