Author Topic: Expedition 38 U.S. Spacewalk (EVA-25) - December 24, 2013  (Read 105275 times)

Offline anik

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Date: December 24, 2013
Participants: Richard Mastracchio and Michael Hopkins
Spacesuits: EMU 3011 and 3005
Airlock: Quest


First overview article on the problem:
http://www.nasaspaceflight.com/2013/12/iss-suffers-coolant-loop-issue-spacewalks-possible/

Cygnus Impact, announcing three EVAs:
http://www.nasaspaceflight.com/2013/12/antares-cygnus-mission-to-iss-delayed/

EVA-24 Article - New Baseline of problem overview:
http://www.nasaspaceflight.com/2013/12/spacewalkers-first-pump-module-replacement-evas/

EVA-25 Article:
http://www.nasaspaceflight.com/2013/12/astronauts-new-pump-module-iss-eva25/

EVA Articles:
http://www.nasaspaceflight.com/tag/eva/

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L2 EVA-25 Detailed Overview Presentation (and Update post EVA-24):

http://forum.nasaspaceflight.com/index.php?topic=33542.0

L2 ART Investigation, troubleshooting, presentations and updates:
http://forum.nasaspaceflight.com/index.php?topic=33517.0

L2 EVA Section:
http://forum.nasaspaceflight.com/index.php?action=tags;tagid=1239

L2 ISS Section:
http://forum.nasaspaceflight.com/index.php?board=33.0
NASA TV:
December 24, Tuesday
6:15 a.m. EST - ISS Expedition 38 Spacewalk Coverage (spacewalk scheduled to begin at 7:10 a.m. EST) - JSC (All Channels)

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So, I assume that Mastracchio will use suit 3005 instead of 3010.
« Last Edit: 12/24/2013 07:16 pm by Jester »

Offline Targeteer

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The crew is building up the replacement EMU with Rick just joining the efforts of Koichi and Hopper.  Mike "Scrappy" Finke is serving as CAPCOM as Houston keeps an eye on the efforts.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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Hopper asked if Houston believed he needed to use his backup gloves because of RTV damage on the first set.  Spanky reports the glove team will meet today to review pictures and make a decision by the evening DPC.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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From the DPC, stowing the failed pump is a get ahead task on this EVA and the procedures to do so are in the plan for EVA 3.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Online Chris Bergin

NASA:

The ISS Mission Mgmt Team officially gave a "go" this morn for tmw's spacewalk. Start time is 7:10a ET w/coverage live on NASA TV at 6:15a
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Offline anik

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So, I assume that Mastracchio will use suit 3005 instead of 3010

Not:

http://blogs.nasa.gov/stationreport/2013/12/22/

"Today,  FE-3 Hopkins and FE-5 Mastracchio resized their suits such that Hopkins will wear EMU 3005 and Mastracchio will wear EMU 3011"

Offline Targeteer

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ISS live coverage extended to allow MMT results to be updated--go as Chris stated--and to explain the inadvertent switch throw that may lead to water contacting the sublimator and thus leading to the EMU suit swap.  Concern is that water on the sublimator may freeze--the term brick was used--when the suit was exposed to vacuum.  Time will allow complete drying of the suit and allow it to be returned to full duty in about a week.
« Last Edit: 12/23/2013 03:46 pm by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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Mike Hopkins is being switched in roles so that he will gain experience being on the SSRMS.  The tags EV 1 and EV 2 will not being changed.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline psloss

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ISS live coverage extended to allow MMT results to be updated--go as Chris stated--and to explain the inadvertent switch throw that may lead to water contacting the sublimator and thus leading to the EMU suit swap.
Rob Navias in the PAO 'chair' this morning did his usual thorough job of covering current status.  Among other things, he went over the issue with EMU 3010 during repress after the official end of EVA-24, the ability to leave the 'degraded' Pump Module where it is (on the POA), and the plan to try to finish the current set of critical tasks with EVA-25.

Offline lcs

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Mike Hopkins is being switched in roles so that he will gain experience being on the SSRMS.  The tags EV 1 and EV 2 will not being changed.

Sounds like a nice compromise. 

Offline psloss

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Mike Hopkins is being switched in roles so that he will gain experience being on the SSRMS.  The tags EV 1 and EV 2 will not being changed.

Sounds like a nice compromise.
Yes, in part because they may not do a third EVA in this sequence.  An earlier version of the plan was for Hopkins to be EV-1 (or perform the EV-1 tasks as he will do on EVA-25) on the third EVA in the sequence.
« Last Edit: 12/23/2013 03:59 pm by psloss »

Offline John44

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Offline Targeteer

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The only EVA topic from the DPC was mention of a procedure add for Koichi on pump commanding he would have to do if QD M1 was connected then there was an LOS preventing ground commanding.  Once M1 is connected and the valve opened, pressure will start to build in the pump and the procedure will prevent any problems during the gap in ground commanding.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Online Chris Bergin

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Offline JimO

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Mike Hopkins is being switched in roles so that he will gain experience being on the SSRMS.  The tags EV 1 and EV 2 will not being changed.

Kelly Humphries [jsc pao] told me the opposite re EV1/EV2 tags at about 2 pm cst [20:00 gmt] today, but he added the suit markings will be unchanged. Did I get it garbled?

Offline Targeteer

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Node 1 hatch closed at 0801, working step 22.  Metox cannisters 11 and 16 are in use.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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mask terminate 0832.  Comm checks good, assessing biomed data
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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EMU purge started at 0916
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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go for repress
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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node 1 hatch open
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

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