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X-59 appears to be the only known active research demonstrator as XB-1 was retired. Boom claims to have completed their Overture facilities and plans to unveil

X-59 appears to be the only known active research demonstrator as XB-1 was retired. Boom claims to have completed their Overture facilities and plans to unveil a completed aircraft this year.[0] 0. https://en.wikipedia.org/wiki/Boom_Overture https://en.wikipedia.org/wiki/Boom_Overture

Robotbeat 1y ago
x-59 is Not active yet. Just taxi tests so far.
- adastra22 1y ago
  Active in the sense of an active project.
  - Robotbeat 1y ago
    Then I’d count Overture, too, I guess.