SLS Artemis 1 Wet Dress Rehearsal Halted Sunday Due to Pressure Issue With Mobile Launcher
By Space Coast Daily // April 3, 2022
(NASA) – The approximately two-day test, known as the wet dress rehearsal for SLS Artemis 1, began Friday, April 1, and was halted Sunday prior to tanking due to loss of ability to pressurize the mobile launcher using two fans.
The fans are needed to provide positive pressure to the enclosed areas within the mobile launcher and keep out hazardous gases.
Without this capability, technicians are unable to safely proceed with remotely loading the propellants into the rocket’s core stage and interim cryogenic propulsion stage.
The test is designed to demonstrate the ability to conduct a full launch countdown at Kennedy Space Center’s Launch Pad 39B, including loading and draining cryogenic, or supercold, propellants into the Artemis I rocket.