XB-1
Retired
Boom Supersonic
Overview
One-third scale supersonic technology demonstrator that validated the core aerodynamic, structural, and flight-control concepts behind Overture. XB-1 became the first independently developed jet to fly supersonic and completed Boom's full test campaign in early 2025.
The program concluded after 13 successful flights and six supersonic runs. Boom retired the aircraft to its Denver headquarters after the second and final supersonic flight in February 2025.