Artemis II Wet Dress Rehearsal: Liquid Hydrogen Flow Resumed in Core Stage
The Artemis II mission is making significant strides as liquid hydrogen operations resume in the core stage of the Space Launch System (SLS) rocket. Ground teams at NASA are currently working to ensure a successful wet dress rehearsal.
Liquid Hydrogen Flow Resumed
On February 2, 2026, technicians successfully restarted liquid hydrogen loading into the SLS core stage. This follows previous interruptions when leak rates at the tail service mast umbilical exceeded safety limits.
Operations Overview
- Start date of resumed operations: February 2, 2026
- Rocket: Space Launch System (SLS)
- Mission: Artemis II
Engineers are working diligently to complete the filling process. They aim to manage the hydrogen concentration levels during loading to maintain safety and efficiency. Once the tank reaches capacity, a replenish phase will begin. This phase involves reducing flow rates to stabilize the liquid hydrogen concentration.
Next Steps
As part of the current operations, teams are also reintegrating liquid oxygen flow into the upper stage of the rocket. This marks another crucial step in preparing the SLS for its upcoming launch.
Overall, the successful management of liquid hydrogen flow is vital for the Artemis II mission’s progression. NASA’s teams are committed to achieving the necessary operational standards to ensure mission success.
