Atlas V 501 | OTV-4 (X-37B) (USA 261) (AFSPC-5) & ULTRASat cubesat deployer

Atlas V 501 | OTV-4 (X-37B) (USA 261) (AFSPC-5) & ULTRASat cubesat deployer

Space Launch Complex 41
Cape Canaveral, FL, USA

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United Launch Alliance

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.

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OTV-4 (X-37B) (USA 261) ( AFSPC-5) & ULTRASat cubesat deployer

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.

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Atlas V 501


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 7

Consecutive Success 7

Maiden Flight 2010-04-22

Launch Failures 0


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