Ready for Supersonic

Watch XB-1’s historic first supersonic test flight.

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Flight date and time may change for mission safety or weather considerations.

Completed Test Flights

Each flight introduces new test points that bring XB-1 closer to supersonic flight.

Jan 10, 2025 – XB-1 Flight 11

XB-1 reaches max dynamic pressure during final handling checks ahead of supersonic flight.

Dec 19, 2024 – XB-1 Flight 10

XB-1 is transonic at Mach 0.95.

Dec 13, 2024 – XB-1 Flight 9

XB-1 reached Mach 0.87 and 27,716 feet, clearing additional flutter test points.

Nov 16, 2024 – XB-1 Flight 8

XB-1 cleared the requirements for aircraft handling qualities with the stability augmentation system off.

Nov 5, 2024 – XB-1 Flight 7

XB-1 completes key system checks, hitting a new top speed of Mach 0.82 (499 KTAS) and reaching 23,015 feet.

Oct 25, 2024 – XB-1 Flight 6

XB-1 continues to expand the flight envelope and gain altitude, reaching 20,000 feet.

Oct 7, 2024 – XB-1 Flight 5

XB-1 flew faster and higher than it has yet at Mach .69 and 17,800 feet. The team continues to expand the flight envelope as XB-1 readies for supersonic flight.

Sep 21, 2024 – XB-1 Flight 4

XB-1 reached its fastest speed yet (Mach 0.6) and the team applied elevated g-forces of 2.5g in preparation for supersonic flight.

Sep 13, 2024 – XB-1 Flight 3

XB-1 reached maximum pitch and yaw attitudes, the team checked environmental control system (ECS) performance, and the landing gear was retracted and extended at a higher speed.