NASA Kennedy ground systems prepping hardware for Artemis II and beyond

Teams with NASA are gaining momentum as work progresses toward future lunar missions for the benefit of humanity as numerous flight hardware shipments from across the world arrived at the agency’s Kennedy Space Center in Florida for the first crewed Artemis flight test and follow-on lunar missions. The skyline at Kennedy will soon see added structures as teams build up the ground systems needed to support them.

Crews are well underway with parallel preparations for the Artemis II flight, as well as buildup of NASA’s mobile launcher 2 tower for use during the launch of the SLS (Space Launch System) Block 1B rocket, beginning with the Artemis IV mission. This version of NASA’s rocket will use a more powerful upper stage to launch with crew and more cargo on lunar missions. Technicians have begun upper stage umbilical connections testing that will help supply fuel and other commodities to the rocket while at the launch pad.

In summer 2024, technicians from NASA and contractor Bechtel National, Inc. completed a milestone called jack and set, where the center’s mega-mover, the crawler transporter, repositioned the initial steel base assembly for mobile launcher 2 from temporary construction shoring to its six permanent pedestals near the Kennedy’s Vehicle Assembly Building.

“The NASA Bechtel mobile launcher 2 team is ahead of schedule and gaining momentum by the day,” stated Darrell Foster, ground systems integration manager, NASA’s Exploration Ground Systems Program at NASA Kennedy. “In parallel to all of the progress at our main build site, the remaining tower modules are assembled and outfitted at a second construction site on center.”

As construction of the mobile launcher 2’s base continues, the assembly operations shift into integration of the modules that will make up the tower. In mid-October 2024, crews completed installation of the chair, named for its resemblance to a giant seat. The chair serves as the interface between the base deck and the vertical modules which are the components that will make up the tower, and stands at 80-feet-tall.

In December 2024, teams completed the rig and set Module 4 operation where the first of a total of seven 40-foot-tall modules was stacked on top of the chair. Becthel crews rigged the module to a heavy lift crane, raised the module more than 150-feet, and secured the four corners to the tower chair. Once complete, the entire mobile launcher structure will reach a height of nearly 400 feet—approximately the length of four Olympic-sized swimming pools placed end-to-end.

On the opposite side of the center, test teams at the Launch Equipment Test Facility are testing the new umbilical interfaces, which will be located on mobile launcher 2, that will be needed to support the new SLS Block 1B Exploration Upper Stage. The umbilicals are connecting lines that provide fuel, oxidizer, pneumatic pressure, instrumentation, and electrical connections from the mobile launcher to the upper stage and other elements of SLS and NASA’s Orion spacecraft.

“All ambient temperature testing has been successfully completed and the team is now beginning cryogenic testing, where liquid nitrogen and liquid hydrogen will flow through the umbilicals to verify acceptable performance,” stated Kevin Jumper, lab manager, NASA Launch Equipment Test Facility at Kennedy. “The Exploration Upper Stage umbilical team has made significant progress on check-out and verification testing of the mobile launcher 2 umbilicals.”

The testing includes extension and retraction of the Exploration Upper Stage umbilical arms that will be installed on mobile launcher 2. The test team remotely triggers the umbilical arms to retract, ensuring the ground and flight umbilical plates separate as expected, simulating the operation that will be performed at lift off.

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