Boom Supersonic

XB-1

Retired

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.

Latest update Jul 11, 2026

XB-1

01

Current status

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.

02

Specifications4

Top Speed Achieved
Mach 1.18
First Supersonic Flight
January 28, 2025
Total Test Flights
13
Engines
3 × General Electric J85-15

03

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