Author Topic: Artemis I Pre-Launch Testing at LC-39B (Leading up to and including all WDR's)  (Read 116420 times)

Offline centaurinasa

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Offline eeergo

Cabana just noted the LH2 umbilical leak has been fixed, and they're working on "a few other things", among which I assume is the ICPS check valve.

Also looks like they're aiming at NET early June for the next WDR attempt, which would place rollout somewhere in the late May timeframe?

Also mentioned currently they're looking at rolling back to the VAB again after a successful WDR, not pressing on to launch directly.
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NASA to Discuss Status of Artemis I Test, Launch

NASA will hold a media teleconference at 3:30 p.m. EDT Thursday, May 5, to discuss the status of the next wet dress rehearsal test of the agency’s Space Launch System (SLS) rocket and Orion spacecraft at the agency’s Kennedy Space Center in Florida. The teleconference will stream live on the agency’s website.


The agency plans to conduct another attempt of the wet dress rehearsal in early June to demonstrate the ability to load propellant into the tanks and conduct a full launch countdown ahead of the Artemis I launch this summer.


Teleconference participants include:


- Jim Free, associate administrator, Exploration Systems Development Mission Directorate, NASA Headquarters in Washington
- Cliff Lanham, senior vehicle operations manager, NASA Exploration Ground Systems Program, NASA Kennedy
To participate by telephone, media must RSVP no later than two hours prior to the start of the event to: [email protected] 


NASA’s SLS rocket and Orion spacecraft arrived back at Kennedy’s Vehicle Assembly Building April 26 after a 10-hour journey from launch pad 39B. Since their arrival, teams have worked to replace a faulty upper stage check valve and repair a small leak within the tail service mast umbilical ground plate housing. The teams also have been performing additional checkouts while the spaceport’s supplier of gaseous nitrogen makes upgrades to their pipeline configuration to support Artemis I activities.


Through Artemis missions, NASA will land the first woman and the first person of color on the Moon, paving the way for a long-term lunar presence and serving as a steppingstone to send astronauts to Mars.
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Offline Vahe231991

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https://twitter.com/sciguyspace/status/1521898525889642496
How were they able to solve the upper state issue, given that the helium value is extremely hard to reach? All I have is that even though the third wet dress rehearsal attempt focused only on the core stage, more progress was made in filling the core stage than in the first two attempts despite the LH2 leak. Glad they resolved the LH2 leak issue by fixing faulty kinks that caused the LH2 to leak from the umbilical tower.

Offline eeergo

https://twitter.com/sciguyspace/status/1521898525889642496
How were they able to solve the upper state issue, given that the helium value is extremely hard to reach? All I have is that even though the third wet dress rehearsal attempt focused only on the core stage, more progress was made in filling the core stage than in the first two attempts despite the LH2 leak. Glad they resolved the LH2 leak issue by fixing faulty kinks that caused the LH2 to leak from the umbilical tower.

Valve was only hard to reach out at the pad. Once the access platforms were installed in the VAB, it was probably a day's worth of work to open the LVSA service hatch, R&R it and leak check it.
-DaviD-

Offline woods170

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https://twitter.com/sciguyspace/status/1521898525889642496
How were they able to solve the upper state issue, given that the helium value is extremely hard to reach? All I have is that even though the third wet dress rehearsal attempt focused only on the core stage, more progress was made in filling the core stage than in the first two attempts despite the LH2 leak. Glad they resolved the LH2 leak issue by fixing faulty kinks that caused the LH2 to leak from the umbilical tower.

Valve was only hard to reach out at the pad. Once the access platforms were installed in the VAB, it was probably a day's worth of work to open the LVSA service hatch, R&R it and leak check it.

Yes. Standard DCSS helium valve R&R on a slightly stretched DCSS derivative. Most of the hardware and procedures for iCPS are legacy from the Delta IV program. Therefore, the swap of the helium valve was expected to be rather straightforward.
« Last Edit: 05/05/2022 11:35 am by woods170 »

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« Last Edit: 05/05/2022 08:21 pm by zubenelgenubi »
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https://twitter.com/nasaspaceflight/status/1526215623696695298

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Currently looking at May 27 for rollout back to 39B, pending readiness.

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The rollout and WDR have been delayed, both are now scheduled for June.https://twitter.com/jeff_foust/status/1526977637301862403
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https://twitter.com/nasagroundsys/status/1529909132056317952

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Mega Moon Rocket Update: 5 of 10 service platforms surrounding @NASA_SLS & @NASA_Orion in High Bay 3 of the Vehicle Assembly Building at @NASAKennedy are now retracted in prep. for our next roll to the launch pad. Tune in to nasa.gov/live tomorrow at noon EDT for more!

Offline Targeteer

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And of course PAO didn't miss a chance to insert identity politics into a purely technical discussion "NASA will land the first woman and the first person of color on the Moon..."  Stop, just stop.


May 26, 2022
MEDIA ADVISORY M22-075
NASA to Discuss Status of Final Test Needed for Artemis I Moon Mission


NASA will hold a media teleconference at 12 p.m. EDT on Friday, May 27, to discuss the status of the next wet dress rehearsal test of the agency’s Space Launch System (SLS) rocket and Orion spacecraft at the agency’s Kennedy Space Center in Florida ahead of the uncrewed Artemis I lunar mission.

The rehearsal is the final test needed before launch and calls for NASA to test the system including operations to load propellant into the rocket’s tanks, conduct a full launch countdown, demonstrate the ability to recycle the countdown clock, and also drain the tanks to give them an opportunity to practice the timelines and procedures they will use for launch.

The teleconference will stream live on the agency’s website.

Participants include:

    Tom Whitmeyer, deputy associate administrator for common exploration systems development, NASA Headquarters
    Cliff Lanham, senior vehicle operations manager, Exploration Ground Systems Program, NASA’s Kennedy Space Center
    John Blevins, chief engineer, Space Launch System Program, NASA’s Marshall Space Flight Center

To participate by telephone, media must RSVP no later than two hours prior to the start of the event for call details at: [email protected] 



Engineers successfully completed work on items identified during the previous wet dress rehearsal tests including replacing and testing an upper stage check valve and  fixing a small leak within the tail service mast umbilical ground plate housing. Teams also completed some tasks originally scheduled to take place in the Vehicle Assembly Building (VAB) after wet dress rehearsal.

Through Artemis missions, NASA will land the first woman and the first person of color on the Moon, paving the way for a long-term lunar presence and serving as a steppingstone to send the first astronauts to Mars.

For updates, follow along on NASA’s Artemis blog at:
« Last Edit: 05/26/2022 09:32 pm by Targeteer »
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Offline laszlo

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Assuming China, Russia or a private firm don't beat NASA to it.

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https://twitter.com/nasakennedy/status/1530167280985853952

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Teams with @NASAGroundSys have successfully completed work to get the @NASA_SLS rocket & @NASA_Orion spacecraft ready for the next wet dress rehearsal test ahead of the #Artemis I mission.

Join us today at 12pm ET for a media teleconference to learn more: nasa.gov/live

Offline yg1968

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Artemis l Wet Dress Rehearsal Status Update:


 

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