Artemis Moon Program

https://twitter.com/x/status/1591970668366925824
View: https://twitter.com/nextspaceflight/status/1591970668366925824


Two issues being watched ahead of Artemis I (both relate to storm damage):
1) LH2 Tail Service Mast umbilical has a suspect electrical connector.
2) Some material has delaminated from the eastern side of the Orion spacecraft.
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https://twitter.com/x/status/1591970756287668228
View: https://twitter.com/nextspaceflight/status/1591970756287668228


The first issue does not sound serious, and they have some redundancy. The second issue will cause the team to reconvene tomorrow for further review.
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https://twitter.com/x/status/1591971003269201920
View: https://twitter.com/jeff_foust/status/1591971003269201920


Mission manager Mike Sarafin: polled go for launch pending one open action (RTV material that came loose where Orion LAS meets up with crew module) as well as issues reviewing storm damage and a faulty electrical connector in the tail service mast umbilical.
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https://twitter.com/x/status/1591972023936471041
View: https://twitter.com/nextspaceflight/status/1591972023936471041


Connector will be replaced overnight, and then they should be good to go on issue #1.
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https://twitter.com/x/status/1591974207105413121
View: https://twitter.com/sciguyspace/status/1591974207105413121


NASA's Mike Sarafin says the area of insulation that peeled away from Orion during Hurricane Nicole is about 10 feet in length, and it is a "very very thin layer" about 0.2 to inches thick.
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https://twitter.com/x/status/1591976670554390528
View: https://twitter.com/nextspaceflight/status/1591976670554390528


NASA says that issue #2 is not repairable at the pad. Either fly as is or rollback I would assume.
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https://twitter.com/x/status/1592024926017720320
View: https://twitter.com/jimfree/status/1592024926017720320


Our #Artemis I team polled GO to proceed toward a launch attempt of our flight test. Overnight, we'll start the countdown and power up @NASA_SLS, while we work actions. Launch is targeted for Nov 16 at 1:04AM ET. Follow the Artemis blog for the latest: blogs.nasa.gov/artemis
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Managers Proceed Toward Nov. 16 Launch, to Meet Monday – Artemis

blogs.nasa.gov blogs.nasa.gov

Managers Proceed Toward Nov. 16 Launch, to Meet Monday

The Artemis I mission management team met Sunday evening to review the status of preparations for launch and gave a “go” to proceed toward a Nov. 16 launch attempt. The team will meet again Monday afternoon to review additional analysis associated with caulk on Orion’s launch abort system that came loose during Hurricane Nicole. The two-hour window for launch opens at 1:04 a.m. EST Wednesday. The countdown clock will begin at 1:54 a.m. Monday.

Within the next day, engineers will conduct detailed analysis of several feet of delaminated caulk where the ogive on Orion’s launch abort system meets the crew module adapter. The analysis will assess risk should it come loose during launch.

Overnight, in parallel with launch preparations, technicians also will remove and replace a component of an electrical connector on the hydrogen tail service mast umbilical ground-side plate. Engineers continue to see some inconsistent data provided through the connector, despite replacing the cable to the connector earlier in the week. Engineers have redundant sources for the information provided through the connector and it is not an impediment to launch.

NASA will provide a prelaunch status update Monday afternoon after the mission management team reconvenes.

Live coverage of tanking operations with commentary on NASA TV will begin on Tues., Nov. 15 at 3:30 p.m. EST. Full launch coverage in English will begin at 10:30 p.m. and NASA en espanol broadcast coverage will begin at 12 a.m. Wednesday. Click here for the latest information on launch briefings and events.

Author Rachel Kraft
Posted on November 13, 2022 10:01 pm
Categories Artemis 1, Artemis I
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Flyaway said:
Yep still a mystery.

https://twitter.com/x/status/1591981985345552385
View: https://twitter.com/nextspaceflight/status/1591981985345552385


NASA did not find a definitive cause on the LH2 leak that scrubbed the second Artemis I launch attempt. They were able to narrow it down to a few options and are proceeding with mitigations for attempt number three.
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Suppose we will never know what truly caused the Hydrogen leak on the second launch attempt. Let's see what happens during the third attempt, it will be interesting to see if Artemis 1 get's launched successfully this time round.
 
https://twitter.com/x/status/1592176938466041864
View: https://twitter.com/chrisg_nsf/status/1592176938466041864


Got info on why only a scrub is available once #Artemis countdown crosses T-33secs. After that piont, flight software transitions to flight mode & only way to get flight mode fully backed out & reset is to detank SLS. Hence, scrub.

nasaspaceflight.com/news/artemis/

@spacecoast_stve
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https://twitter.com/x/status/1592177267366502400
View: https://twitter.com/sciguyspace/status/1592177267366502400


My understanding is that de-tank the first time is a 2-day process to get back to a launch attempt, and then a second time is 3-day turnaround?
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https://twitter.com/x/status/1592178206848712706
View: https://twitter.com/chrisg_nsf/status/1592178206848712706


From a commodity perspective, yes. First scrub is replenish only LH2 for a 48-hour turnaround. Second scrub would be 72-hour turnaround to replenish LH2 and LOX. For this week, they'll take the 72-hr plan as a baseline and adjust when needed based on scrub & timing.
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Well according to the Launch Pad Astronomy the LOX lines chill down has been completed and LH2 lines chill down is progressing with tanking starting in less than 30 minutes.

On another note the launch at 1:04PM EST would be 6:04PM NZT.

So since you live in New Zealand, @overscan (PaulMM) , if the launch is on time we might get to watch it on the six o'clock news :D .
 
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