https://spacenews.com/nasa-works-to-track-down-source-of-hydrogen-leak-from-sls-countdown-test/
Ce qui apparait reposer sur deux éléments principaux pris en compte :
- NASA announced it planned to roll back the SLS to the Vehicle Assembly Building (VAB) “due to upgrades required at an off-site supplier of gaseous nitrogen used for the test,” the agency said. Problems with the supply of gaseous nitrogen, used to support activities at the pad, had delayed two previous countdown rehearsals.
- Sarafin said engineers also had to consider environmental issues of having the vehicle on the pad for an extended period, such as wind stresses on the towering vehicle. “The longer we stay at the pad, the more we stress the vehicle,” he explained. “Every time the wind blows against it, it creates a bending moment and, over time, that adds up.”
pour pimenter le débat et calmer les impatiences Il est rappelé par une intervenante qu'il y a eu des épisodes de "mission navette" où les remplissages et vidanges des réservoirs ont été fort nombreux (ils en sont déjà à trois pour ce test WDR)
Blackwell-Thompson said she was not particularly concerned. She noted there were five or six tanking tests before the first launch of the shuttle more than four decades ago. “Putting it into context, I would say we’re within family of our experience in the past for first-time ops,” she said.
Bref on a de l'expérience à la NASA, lors des préparations de missions inaugurales ....
Cela dit il faut espérer qu'il ne faudra pas "pousser le bouchon" trop loin pour solutionner ces pépins.
Concernant l'approvisionnement en azote défaillant :
the supplier for the gaseous nitrogen makes upgrades to their pipeline configuration to support Artemis I testing and launch.
Donc "défaut/anomalie" dans les tuyaux ? Il va falloir sans tarder faire intervenir