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Atlas V 551 – United Launch Alliance

Atlas V 551 – United Launch Alliance

  • Family: Atlas
  • Length: 59.7 m
  • Diameter: 3.8 m
  • Launch Mass: 573 T
  • Low Earth Orbit Capacity: 18850 kg

The Atlas V 551 was manufactured by United Launch Alliance with the first launch on 2006-01-19. Atlas V 551 has 13 successful launches and 0 failed launches with a total of 13 launches. Atlas V is an expendable launch system in the Atlas rocket family. It was formerly operated by Lockheed Martin and is now operated by United Launch Alliance (ULA), a joint venture with Boeing. Each Atlas V rocket uses a Russian-built RD-180 engine burning kerosene and liquid oxygen to power its first stage and an American-built RL10 engine burning liquid hydrogen and liquid oxygen to power its Centaur upper stage. The RD-180 engines are provided by RD Amross, while Aerojet Rocketdyne provides both the RL10 engines and the strap-on boosters used in some configurations. The standard payload fairing sizes are 4 or 5 meters in diameter and of various lengths. Fairings sizes as large as 7.2 m in diameter and up to 32.3 m in length have been considered. The rocket is assembled in Decatur, Alabama and Harlingen, Texas.

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