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The Atlas V rocket is a launch vehicle developed and manufactured by United Launch Alliance (ULA), a joint venture between Boeing and Lockheed Martin. It is designed to deliver payloads into space for both government and commercial customers. The Atlas V has been in service since 2002 and has a strong track record of successful launches.

Here are some key features and capabilities of the Atlas V rocket:

Configurations: The Atlas V is available in several different configurations, which vary based on the number of solid rocket boosters (SRBs) and the type of Centaur upper stage used. The most common configurations include the Atlas V 401, 411, 421, and 551.

Two-Stage Rocket: The Atlas V is a two-stage rocket, meaning it has two distinct stages stacked on top of each other. The first stage is powered by a Russian-built RD-180 engine, which burns a highly efficient combination of kerosene (RP-1) and liquid oxygen (LOX). The second stage is powered by the RL10 engine, which uses liquid hydrogen (LH2) and liquid oxygen (LOX) as propellants.

Payload Fairing: The rocket's payload is encapsulated in a protective fairing, which shields the payload during the ascent through the atmosphere. The fairing comes in two different diameters: 4 meters (13.1 feet) and 5.4 meters (17.7 feet), depending on the payload requirements.

Flexibility: The Atlas V is known for its versatility and can deliver a wide range of payloads to various orbits, including low Earth orbit (LEO), geostationary transfer orbit (GTO), and beyond. It has been used to launch satellites for communications, weather monitoring, scientific research, national security, and more.

Reliability: The Atlas V has established a strong reputation for reliability and has achieved a high success rate throughout its operational history. It has been used for numerous critical missions, including launching spacecraft to Mars, delivering satellites to orbit, and supporting national security missions.