Author Topic: Expedition 24 thread (June 2 - September 24, 2010) - Includes ETCS Updates  (Read 187564 times)

Offline psloss

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Capcom now calling up to the crew with some words on the overall timeline, including shifting the schedule to the right.
There's an audio clip on NASA.gov's main ISS page of an earlier call about the possibility of slipping to the right, adding an extra day between the two EVAs, and some additional details:
http://www.nasa.gov/mission_pages/station/main/index.html

Edit: adding the earlier description of the audio, as the main page has now been updated as JimO posted.
Quote
Mission Control informed the crew aboard the International Space Station this morning that its spacewalk to replace a faulty cooling system component may be delayed until Saturday.

Spacecraft communicator Jim Kelly radioed the word to Expedition 24 spacewalkers Doug Wheelock and Tracy Caldwell Dyson about 9:20 a.m. EDT. Teams of flight controllers, engineers, and spacewalk and robotics experts have made significant progress in preparing for the spacewalk, but may need an additional day to finish working out all the details.
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The spacewalks are challenging because the crew will be handling ammonia lines at full operating pressure, which makes the lines stiff during reconnection and mating. The timeline for the spacewalk will require numerous “off ramps” to ensure there is enough time for the crew to complete decontamination procedures if they come in contact with ammonia. The plan is to complete the replacement of the pump module during the first spacewalk, and complete the fluid ammonia connections to the replacement pump on the second.

Direct MP3 file link:
http://www.nasa.gov/mp3/473477main_eva_planning_080510.mp3
« Last Edit: 08/05/2010 04:06 PM by psloss »

Offline JimO

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from the NASA ISS news page -- really been smokin' the last week or so, we need to congratulate them for timeliness and depth!


Spacewalks delayed to Saturday and Wednesday

Teams of NASA flight controllers, engineers, and spacewalk and robotics experts have made significant progress in preparing for two spacewalks to replace a faulty cooling system component on the International Space Station. To allow teams additional preparation time, the spacewalks now are scheduled for Saturday and Wednesday.

For both days, NASA TV coverage remains at 6 a.m. EDT, and the spacewalks will begin at 6:55 a.m. The spacewalks are expected to take 6 ˝ to 7 hours each.

Offline dsmillman

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Bill Harwood gives a summary of the first EVA at:

http://www.cbsnews.com/network/news/space/recent.html

This summary indicates that he has a copy of the EVA Checklists.

Offline JimO

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Any word if the crew has found the missing LiOH adaptor to use US canisters on the Russian scrubber?


Offline jacqmans

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MEDIA ADVISORY: M10-110

NASA MOVES SPACE STATION REPAIR SPACEWALK TO SATURDAY

HOUSTON -- The first of two spacewalks by NASA astronauts to replace a
failed ammonia pump on the International Space Station has been moved
to Saturday, Aug. 7. A second spacewalk is planned for Wednesday,
Aug. 11, to complete the repairs.

Teams of flight controllers, engineers, and spacewalk experts have
made significant progress in preparing for the first spacewalk, but
need an additional day to get ready. The additional time allows for
final procedures to be sent late Thursday to the station, giving the
crew a full day to review the plans developed by Mission Control.
Managers also moved the second spacewalk to Wednesday to give the
crew more time to rest and prepare.

Expedition 24 Flight Engineers Doug Wheelock and Tracy Caldwell Dyson
are scheduled to perform the spacewalks, which will air on NASA
Television. Coverage will begin at 5 a.m. CDT. The spacewalks are
scheduled to begin at 5:55 a.m. Saturday's spacewalk will be the
fourth for Wheelock and the first for Caldwell Dyson.

Approximately two hours after the conclusion of each spacewalk, NASA
TV will broadcast a briefing from NASA's Johnson Space Center. The
briefing participants will be Mike Suffredini, International Space
Station program manager; Courtenay McMillan, Expedition 24 spacewalk
flight director; and David Beaver, Expedition 24 spacewalk officer.

Johnson's newsroom will be open for credentialed reporters to attend
the briefing. Johnson also will operate a telephone bridge for
reporters with valid media credentials issued by a NASA center.
Journalists planning to use the service must contact the Johnson
newsroom at 281-483-5111 no later than 15 minutes prior to the start
of a briefing. Phone bridge capacity is limited and will be available
on a first-come, first-served basis.

Engineers and flight controllers continue to review data on the July
31 pump failure, which caused the loss of one of two cooling loops
aboard the station. This failure resulted in a power down and
required adjustments to maintain as much redundancy as possible for
the station systems. The systems are stable, and the station's six
crew members are not in any danger.

Offline Space Pete

NASA TV Video: "Practice Makes Perfect EVAs".


NASA TV Video: "Spacewalk Preview Briefing".



Attached image:
Quote from: Doug Wheelock via Twitter
Tracy and I in the 'Quest' Airlock, preparing our equipment for two very challenging spacewalks scheduled for Friday and Monday. The Space Station had a critical failure last Saturday, and we'll attempt to bring it back to life. A 'shout out' and tremendous thanks to our support team on Earth! "When one voice falls silent…there are hundreds of voices that will begin to sing…"
« Last Edit: 08/05/2010 09:42 PM by Space Pete »
Electronic Engineer by day, NASASpaceflight's ISS Editor by night | Read my NASASpaceflight articles here

Offline Space Pete

From ISS On-Orbit Status Report for 05/08/2010:

FE-2 Tracy Caldwell-Dyson & FE-4 Doug Wheelock jointly continued preparations for their EVAs, configuring tools needed during the spacewalks not yet deployed in the A/L and readying numerous tethers (e.g., one 55-ft & three 85-ft safety tethers, four waist tethers & four D-ring extenders).

FE-6 Shannon Walker also had about one hour set aside for EVA tool building support.

Later, Tracy & Doug, joined in part by FE-5 Fyodor Yurchikhin, conducted a 2.5 hour review of the latest uplinked EVA procedures. EVA-15, the first of two spacewalks, is expected to last ~7 hours. Wheelock (EV1) will "fly" with the PM on the SSRMS operated by Shannon (suited as IV (Intravehicular) Crewmember), Tracy will free-float.
Objectives for EVA-15 will be to:
• Demate connections and QDs on the old PM.
• Install PM jumper (to bypass PM and connect ATA
  (Ammonia Tank Assembly) at S1 to Loop-A).
• Install AGB (Adjustable Grapple Bar), currently on ESP-2, on old PM.
• Remove old PM at S1 and stow on POA on the MT at WS2 (Worksite 2).
• Prepare spare PM (on ESP-2) for installation.
• Install spare PM at S1 and make electrical & data connections.

Afterwards, Tracy & Wheels worked in the A/L to continue preparing its EL (Equipment Lock) compartment for the first spacewalk.

Activities by Shannon, who will be operating the SSRMS, included:
• A ~2.5 hour in-depth review of EVA Robotics procedures, including
  DOUG (Dynamic Onboard Ubiquitous Graphics) files.
• Preparing RWS (Robotic Workstation) SSC (Station Support Computer)
  monitors in the US Lab to provide additional views during EVA.
• Updating SODF (Station Operations Data File) EVA Systems
  procedures with P&I (Pen & Ink) changes to include ammonia
  decontamination procedures plus an ammonia contamination cue card.
• Tying in the DOUG application for SSRMS EVA support by connecting
  the DOUG SSC at the Lab RWS to the networked
  PCS. [DOUG is a frequently updated special software program running on the
  MSS (Mobile Service System) RWS laptops that provides a graphical birdseye-view
  image of the external station configuration and the SSRMS arm, showing its real-time
  location and configuration on a laptop during its operation.]

At ~4:25 PM GMT, Doug, Tracy & Shannon held a teleconference with ground specialists at MCC-Houston to discuss spacewalk particulars.
« Last Edit: 08/05/2010 09:56 PM by Space Pete »
Electronic Engineer by day, NASASpaceflight's ISS Editor by night | Read my NASASpaceflight articles here

Offline Space Pete

Timeline for EVA-1 (in EDT and Elapsed Time (ET)):

    EDT     |   ET   | EVENT
06:55 AM | 00:00 | Spacesuits to battery power.
07:00 AM | 00:05 | Post depress/airlock egress.
07:25 AM | 00:30 | Tools/tether setup.
07:45 AM | 00:50 | EV-1: PM removal preps.
07:55 AM | 01:00 | EV-2: CETA cart preps.
08:35 AM | 01:40 | EV-1: SSRMS prep and ingress.
08:45 AM | 01:50 | EV-2: PM jumper vent.
09:00 AM | 02:05 | Initial PM quick-disconnect ops.
10:05 AM | 03:10 | EV-1: Retrieve AGB (Adjustable Grapple Bar).
10:05 AM | 03:10 | EV-2: Prep failed PM for removal.
10:50 AM | 03:55 | Remove failed PM.
11:10 AM | 04:15 | EV-1: Move failed PM to POA fixture.
11:10 AM | 04:15 | EV-2: Spare PM preps.
11:30 AM | 04:35 | EV-1: Spare PM preps.
11:50 AM | 04:55 | BINGO for spare PM removal.
12:20 PM | 05:25 | Remove spare PM from ESP-2.
12:50 PM | 05:55 | Install spare PM in S1 Truss.
01:25 PM | 06:30 | Cleanup and ingress.
01:50 PM | 06:55 | Pre-airlock repress.
01:55 PM | 07:00 | Airlock repress.

Taken from www.cbsnews.com/network/news/space/recent.html
« Last Edit: 08/05/2010 10:18 PM by Space Pete »
Electronic Engineer by day, NASASpaceflight's ISS Editor by night | Read my NASASpaceflight articles here

Offline rdale

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Sounds like they had a LOT of problems with smoke detectors on the Russian side today, with several alarms after 2pm EDT-ish. Ground thanked Tracy for "excellent fire drills" :)


Offline orbiter62995

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Any more audio available?
––Orbiter 62995

Offline rdale

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From what hour(s)?

Offline orbiter62995

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Any regarding Walker's SSRMS planning (I guess that was most recently this afternoon) OR the radio conference between MCC and both Walker and Caldwell-Dyson.
« Last Edit: 08/06/2010 02:49 AM by orbiter62995 »
––Orbiter 62995

Offline rdale

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No, those are always privatized.

Offline rdale

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AM DPC: Shannon asked if the robotics procedures they have are final - and ground said "yes" (L2 request :) )

This evening's DPC has "Russian Equipment Relocation from FGB Zone Report" as the focus, I'm wondering if it was related to a note I saw last week about stuff being stored in unauthorized locations on their side?

Offline jcm

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Do we know yet which EMUs will be used for the EVA?
-----------------------------

Jonathan McDowell
http://planet4589.org

Offline dsmillman

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On today's ISS coverage it was just announced that the ISS MMT has given a "GO" for the EVA tomorrow.
« Last Edit: 08/06/2010 03:17 PM by dsmillman »

Offline psloss

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PAO Kyle Herring also noted that the approved timeline for the first EVA is approximately ("just under") 7 hours.

Edit, Space Pete posted the timeline Bill Harwood published earlier in the thread:
http://forum.nasaspaceflight.com/index.php?topic=16584.msg625460#msg625460
« Last Edit: 08/06/2010 03:33 PM by psloss »

Offline dsmillman

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The Checklist for tomorrow's EVA is available at:

http://www.floridatoday.com/assets/pdf/A916207586.PDF


Offline anik

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Do we know yet which EMUs will be used for the EVA?

Sure. EV-1 Wheelock - 3005. EV-2 Caldwell Dyson - 3009.

Offline rdale

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Evening DPC: Ground team is working flow charts as a "high level" reference for bringing back up Loop A after things are done, they'll also have a one-page sheet in the morning regarding keeping the file server from getting impacted by the powerup.

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