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SLS Rockets are Getting Ready for First Crewed Artemis Mission

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The Space Launch System team is not just building one rocket but manufacturing several rockets for exploration missions and future SLS flights beyond the initial Artemis launch,” said John Honeycutt, SLS program manager at NASA’s Marshall Space Flight Center in Huntsville, Alabama. “The Artemis I mission is the first in a series of increasingly complex missions that will extend our presence on the Moon. The SLS rocket’s unprecedented power and capabilities will send missions farther and faster throughout the solar system.
With its two solid rocket boosters and four RS-25 engines, SLS produces more than 8.8 million pounds of thrust to launch each Artemis mission beyond Earth’s orbit and onward to the Moon. The rocket features some of the largest, most advanced, and most reliable hardware elements ever built for space exploration.

To power the agency’s next-generation deep space missions, SLS delivers propulsion in phases. At liftoff, the core stage with its four RS-25 engines and the twin boosters fire to propel SLS off the launch pad into orbit. Once in orbit, the Interim Cryogenic Propulsion Stage (ICPS) provides the in-space propulsion to send NASA’s Orion spacecraft and its crew on a precise trajectory toward the Moon.

Aerojet Rocketdyne, the RS-25 lead contractor, is readying the RS-25 engines for the next three SLS flights after Artemis I. The engines have been tested and will be integrated with their respective core stages closer to final assembly. The engines for Artemis II are ready to go to NASA’s Michoud Assembly Facility in New Orleans, where they’ll be integrated with the SLS core stage. The Artemis III engines are being prepared for flight at Aerojet Rocketdyne’s facility at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, and the company is already manufacturing engines for missions beyond Artemis IV.

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