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Forum:	Exploration: Moon to Mars
Topic:	NASA's Artemis II mission (Orion/SLS)

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Your Reply: HTML is ON UBB Code is ON Smilies Legend	[QUOTE]Originally posted by Robert Pearlman: [B]NASA release <blockquote><font size="+0">[b]Core Stage Liquid Hydrogen Loading Resumes[/b]</font> Ground teams have resumed the fast fill of liquid hydrogen operations into the core stage of the SLS (Space Launch System) rocket. Operations were stopped twice after leak rates at the interface of the tail service mast umbilical exceeded allowable limits. Engineers will attempt to complete fast fill and begin topping off the tank. Should that be successful, they will attempt to manage the hydrogen concentration, keeping it within acceptable limits during core stage hydrogen loading. Once the tank is full, the rocket will go into a replenish phase in which the flow rates are reduced; this is expected to help control the liquid hydrogen concentration level in the umbilical. Teams are reinitiating liquid oxygen flow into the upper stage.</blockquote>[/B][/QUOTE]
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