Atlas V 552 – United Launch Alliance
- Family: Atlas
- Length: 58.3 m
- Diameter: 3.81 m
- Low Earth Orbit Capacity: 20520 kg
The Atlas V 552, manufactured by United Launch Alliance established in 2006, undertook its inaugural launch on an unknown date. Notably, Atlas V 552 has 0 successful launches and 0 failed attempts, with a cumulative tally of 0 launches, currently with 0 pending launches in the pipeline.
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 552 version uses a 5m wide fairing, 5 solid rocket boosters and two engines on the Centaur stage.
