Artemis II Wet Dress Rehearsal: Teams Stop Flow of Core Stage Liquid Hydrogen for Troubleshooting
via nasa.gov
Short excerpt below. Read at the original source.
Teams have stopped the flow of liquid hydrogen through the tail service mast umbilical interface into the core stage after leak concentrations exceeded allowable limits. Stopping the flow allows engineers to perform troubleshooting procedures that were developed after Artemis I. Liquid oxygen continues to flow into the core stage, and liquid hydrogen continues to flow […]