Space News by Jeff Foust — April 16, 2022
WASHINGTON — NASA says it could attempt another countdown rehearsal of the Space Launch System as soon as April 21 depending on how quickly they can fix a hydrogen leak that stopped the previous test.
At an April 15 briefing, SLS managers said they were beginning work to track down the source of the leak detected shortly after starting to load liquid hydrogen into the rocket’s core stage during the April 14 attempt. It was the first time that controllers had reached that stage of the countdown after technical problems halted two previous attempts before liquid hydrogen could start loading.
The leak is on the ground side of an umbilical plate on the mobile launcher’s tail service mast, and not on the SLS itself. “The good news is that there’s only a few things in that purge enclosure and there’s a couple of discrete penetrations that could be the culprit,” said Charlie Blackwell-Thompson, Artemis launch director.
More:
https://spacenews.com/nasa-works-to-track-down-source-of-hydrogen-leak-from-sls-countdown-test/