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SpaceShipOne ranks among the world's first spaceplanes in the first 50 years of human spaceflight, with the North American X-15, Space Shuttle, Buran, and Boeing X-37. SpaceShipOne is the second spaceplane to have launched from a mother ship, preceded only by the North American X-15.
SpaceShipOne flight 16P on September 29, 2004 and SpaceShipOne flight 17P on October 4, 2004 were successful competitive flights, winning the X Prize. The Tier One program run by Scaled Composites concluded after the retirement of SpaceShipOne, transitioning to a successor program for customer Virgin Galactic .
Although not a Virgin Galactic launcher, SpaceShipOne was the direct predecessor of the Virgin Galactic vehicles, and served to demonstrate the feasibility of the concept. SpaceShipOne was an experimental air-launched rocket-powered aircraft with sub-orbital spaceflight capability at speeds of up to 3,000 ft/s (900 m/s), using a hybrid rocket ...
The White Knight and SpaceShipOne were designed by Burt Rutan and manufactured by Scaled Composites, a private company founded by Rutan in 1982. On three separate flights in 2004, White Knight conducted SpaceShipOne into flight, and SpaceShipOne then performed a sub-orbital spaceflight, becoming the first private craft to reach space.
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SpaceShipOne takes off. X PRIZE rules required that the date and place of competitive flights be announced to the X PRIZE Foundation at least 60 days before the flight. Due to problems encountered during flight 15P on June 21, 2004, Scaled Composites did not immediately set a date for their competitive flights, suspecting that another test flight might be required.
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SpaceShipOne was released from White Knight at an altitude of 46,000 ft (14.0 km) and a speed of 120 knots (62 m/s). After ten seconds the rocket was lit, for a 55 second burn. At burn-out the altitude was 150,000 ft (45.7 km) and the Mach number was 2.5. The craft then coasted to an apogee altitude of 211,400 ft (64.4 km).