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[b]Mission Management Team 'Go' to Proceed with Artemis I Wet Dress Rehearsal[/b]
At approximately 7:40 a.m. EDT on Monday (April 4), the mission management team chair gave the "go" to proceed with tanking the rocket for the Artemis I wet dress rehearsal test. Later in the countdown the Launch Director will give the "go" to begin the tanking process. Meteorologists with Space Launch Delta 45 said there were no weather constraints for the test.
Teams are continuing to hold the clock to resolve an outage with the vendor of gaseous nitrogen required for tanking preparations. Nitrogen is used to prepare for, and during tanking operations, to provide a non-flammable environment inside of the SLS. When the issue is resolved, the countdown clock will pick back up with T-6 hours, 40 minutes on the clock (L-7 hours, 20 minutes) remaining in the countdown, beginning with chilling down the liquid oxygen lines for the core stage.
Once propellant loading operations begin, liquid oxygen (LOX) and liquid hydrogen (LH2) will flow into the into the rocket's core stage and interim cryogenic propulsion stage tanks and be topped off and replenished as some of cryogenic propellant boils off. The team will also conduct leak checks to ensure propellant loading is proceeding as expected.
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