Development Continues on the In-Space Propulsion Stage for the SLS Block 1B Rocket...

Michael DeMocker

NASA, Boeing Complete Barrel Sections for Future SLS Exploration (Photo Release - May 25)

These images and videos show technicians at NASA’s Michoud Assembly Facility in New Orleans examining and lifting midbody barrels for the Exploration Upper Stage (EUS) structural test article of the SLS (Space Launch System) rocket in May 2023.

The barrel sections make up the body, or main structure, of the future in-space propulsion stage for the mega rocket. The Exploration Upper Stage will be used on the second configuration of the SLS rocket, known as Block 1B, and will provide in-space propulsion to send astronauts in NASA’s Orion spacecraft and heavy cargo on a precise trajectory to the Moon.

Beginning with Artemis IV, EUS will replace the interim cryogenic propulsion stage for the Block 1 configuration of SLS. It has larger propellant tanks and four RL10 engines, enabling SLS to launch 40% more cargo to the Moon along with crew.

EUS flight hardware is in early production at Michoud. Crews with NASA and Boeing, the lead contractor for the SLS core stage and EUS, are also manufacturing the EUS structural test article.

The test hardware is structurally identical to the flight version and will be used during a series of strenuous testing that simulates the forces the rocket will experience during launch and flight and verify its structural integrity.

NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon.

SLS is the only rocket that can send Orion, astronauts and supplies to the Moon in a single mission.

Source: NASA.Gov

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Michael DeMocker


NASA / Eric Bordelon


Michael DeMocker

A video showing barrels that will comprise the structural test article for the SLS Exploration Upper Stage being processed at NASA's Michoud Assembly Facility in New Orleans last month...

📹: Eric Bordelon#Artemis #ArtemisIV pic.twitter.com/b5yiy3lr9J

— Rich Par (@AstroPnoy) June 13, 2023