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United Launch Alliance (ULA) is a joint venture of Lockheed Martin Space Systems and Boeing Defense, Space & Security. ULA was formed in December 2006 by combining the teams at these companies which provide spacecraft launch services to the government of the United States. ULA launches from both coasts of the US. They launch their Atlas V vehicle from LC-41 in Cape Canaveral and LC-3E at Vandeberg. Their Delta IV launches from LC-37 at Cape Canaveral and LC-6 at Vandenberg.
It is the second flight of the second Boeing X-37B vehicle and the fourth flight of the program. United States Air Force Orbital Test Vehicle is an unmanned 5000 kg, 8.8 m-long reusable mini-spaceplane capable of autonomous re-entry and landing. The OTV-4 mission was to test Aerojet Rocketdyne's XR-5A Hall-effect thruster and conduct a NASA investigation for testing various materials in space. The mission concluded after 717 days in orbit, marking the first time X-37B landed on the Shuttle Landing Facility at the Kennedy Space Center.
Serial 2
Launch Crew Count 0
Status Active
Landing Time 2017-05-07T11:47:00+0000
Height 58.30 Meters
Max Stages 2
Mass To GTO 3780 kg
Liftoff Thrust 3827 kN
Diameter 3.80 Meters
Mass To LEO 8210 kg
Liftoff Mass 334 Tonnes
Launch Success 8
Consecutive Success 8
Maiden Flight 2010-04-22
Launch Failures 0