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Boeing X-37

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Boeing X-37B Orbital Test Vehicle

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Air Force X-37B spaceplane successfully returns to earth after 780-day mission

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SpaceX Launches Secretive X-37B Space Plane

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X-37B OTV-4 landing (close-up)

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Boeing X-37B Orbital Test Vehicle explained

The Boeing X-37, also known as the Orbital Test Vehicle (OTV), is a reusable uncrewed spacecraft. It is boosted into space by a launch vehicle, then re-enters Earth's atmosphere and lands as a spaceplane. The X-37 is operated by the United States Air Force for orbital spaceflight missions intended to demonstrate reusable space technologies. It is a 120%-scaled derivative of the earlier Boeing X-40.
  • Development 

  • Design 

  • Operational history 

  • Variants