National Aeronautics and Space Administration
Ground support crews with NASA’s Exploration Ground Systems (EGS) will fuel the agency’s most powerful
rocket, the Space Launch System (SLS), to launch from historic Pad 39B at NASA’s Kennedy Space Center.
Over 730,000 gallons of liquid propellants travel
through complex umbilical systems from the mobile
launcher into the tanks of the SLS.
Interim Cryogenic Propulsion
Stage Umbilical
Located on the 240-ft level on the mobile
launcher, the ICPSU supplies fuel, oxidizer,
enviromental control systems, pneumatics, and
electrical connections to the interim cryogenic
propulsion stage (ICPS) of the SLS.
Tail Service Mast Umbilical
Mounted to the base of the mobile
launcher, the TSMUs provide fluid line
and electrical cable connections to the
SLS Core Stage engine section.
At T-0 umbilicals automatically
release from the SLS and spring
back to the mobile launcher.
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