The [[cockpit]] has space for three people, the [[pilot (spaceflight)|pilot]] and two passengers. It maintains a sea-level pressurized breathable atmosphere, so the occupants do not need to wear [[spacesuit]]s. The cockpit is also identical to White Knight, right down the equipment installed, to allow greater testing of the design.
Like the Space Shuttle Orbiter, SpaceShipOne is incapable of independent takeoff from the ground, and is also incapable of independently achieving the altitude required to execute a successful spaceflight. For takeoff it is carried under [[Scaled Composites White Knight|White Knight]]. The combination of SpaceShipOne and White Knight can take off, land, and fly under jet power to high altitude.