NASA Mission Management Team “Go” to proceed with Artemis I Wet General Hearsal

Artemis I Wet Rehearsal Spotlights

NASA’s Space Launch System (SLS) rocket carrying the Orion spacecraft is seen on a mobile launcher at Launch Complex 39B on Saturday, April 2, 2022 lit by searchlights during the Artemis I- Launch team conducts the wet dress rehearsal test at NASA’s Kennedy Space Center in Florida. Ahead of NASA’s Artemis-I flight test, the wet rehearsal will take the Artemis-I launch team through operations to load fuel, perform a full launch countdown, demonstrate the ability to recycle the countdown clock, and close the tanks dump to practice schedules and procedures. Credit: NASA/Joel Kowsky

At approximately 7:40 a.m. EDT, the chair of the mission management team gave the go-ahead proceed with refueling the rocket for the wet dress rehearsal of Artemis I. Later in the countdown, the Launch Director gives the go-ahead to begin the refueling process. Space Launch Delta 45 meteorologists said there were no weather restrictions for the test.

Teams remain awaiting repairs to an outage at the supplier of gaseous nitrogen needed for tank preparations. Nitrogen is used in preparation and during the fueling process to create a non-flammable environment inside the[{” attribute=””>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 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.  

NASA is streaming live video of the rocket and spacecraft at the launch pad on the Kennedy Newsroom YouTube channel. Venting may be visible during tanking operations. NASA is also sharing live updates on the Exploration Ground Systems Twitter account NASA Mission Management Team “Go” to proceed with Artemis I Wet General Hearsal

Russell Falcon

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