1 year ago

LIVE! NASA Provides Update on Artemis 1
#NASA #WetDressRehearsal #Artemis

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NASA will hold a media teleconference about the test Tuesday, June 21 at 11 a.m., which will stream on the agency’s website. A live feed of the rocket at launch pad continues to be available.

The Artemis I wet dress rehearsal ended on Monday at 7:37 p.m. EDT at T-29 seconds in the countdown. The test marked the first time the team fully loaded all the Space Launch System rocket’s propellant tanks and proceeded into the terminal launch countdown, when many critical activities occur in rapid succession.

During propellant loading operations earlier in the day, launch controllers encountered a hydrogen leak in the quick disconnect that attaches an umbilical from the tail service mast on the mobile launcher to the rocket’s core stage. The team attempted to fix the leak by warming the quick disconnect and then chilling it back down to realign a seal, but their efforts did not fix the issue.

Launch controllers then developed a plan to mask data associated with the leak that would trigger a hold by the ground launch sequencer, or launch computer, in a real launch day scenario, to allow them to get as far into the countdown as possible. The time required to develop the plan required extended hold time during the countdown activities, but they were able to resume with the final 10 minutes of the countdown, called terminal count. During the terminal count, the teams performed several critical operations that must be accomplished for launch including switching control from the ground launch sequencer to the automated launch sequencer controlled by the rocket’s flight software, and important step that the team wanted to accomplish.

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BROADCAST TIMELINE
00:00:00 - Start of Stream

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