NASA teams investigating pad hardware at Kennedy Space Center found a potential culprit behind a leaky hydrogen line that scrubbed the Artemis I moon mission's last attempt, making way for a fueling test this week.
moon mission's last attempt, making way for a fueling test this week.
In late August, it appeared one of four RS-25 main engines failed to reach the right pre-launch temperature, but NASA officials later determined the bad reading was due to a faulty sensor. During the second attempt earlier this month, a major leak of liquid hydrogen – one of SLS' two propellants along with liquid oxygen – forced a scrub after the tank couldn't be filled.
First, the seals in the hydrogen QD at pad 39B were replaced. That will allow for a"kinder, gentler" loading process designed to pump the chilled hydrogen at slower rates and hopefully avoid thermal shock. If all goes well with propellant loading, NASA managers will turn their attention to the Space Force, which is responsible for public safety at Kennedy Space Center and neighboring Cape Canaveral Space Force Station.
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