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#360
by
psloss
on 05 Aug, 2010 15:43
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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.htmlEdit: adding the earlier description of the audio, as the main page has now been updated as JimO posted.
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
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#361
by
JimO
on 05 Aug, 2010 15:49
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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.
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#362
by
dsmillman
on 05 Aug, 2010 18:57
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#363
by
JimO
on 05 Aug, 2010 19:29
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Any word if the crew has found the missing LiOH adaptor to use US canisters on the Russian scrubber?
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#364
by
jacqmans
on 05 Aug, 2010 21:12
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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.
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#365
by
Space Pete
on 05 Aug, 2010 21:41
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NASA TV Video: "Practice Makes Perfect EVAs".
NASA TV Video: "Spacewalk Preview Briefing".
Attached image:
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…"
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#366
by
Space Pete
on 05 Aug, 2010 21:54
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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.
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#367
by
Space Pete
on 05 Aug, 2010 22:13
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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
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#368
by
rdale
on 05 Aug, 2010 22:57
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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"
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#369
by
orbiter62995
on 06 Aug, 2010 00:10
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Any more audio available?
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#370
by
rdale
on 06 Aug, 2010 01:34
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From what hour(s)?
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#371
by
orbiter62995
on 06 Aug, 2010 02:46
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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.
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#372
by
rdale
on 06 Aug, 2010 03:37
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No, those are always privatized.
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#373
by
rdale
on 06 Aug, 2010 11:26
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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?
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#374
by
jcm
on 06 Aug, 2010 13:09
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Do we know yet which EMUs will be used for the EVA?
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#375
by
dsmillman
on 06 Aug, 2010 15:02
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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.
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#376
by
psloss
on 06 Aug, 2010 15:12
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#377
by
dsmillman
on 06 Aug, 2010 16:23
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#378
by
anik
on 06 Aug, 2010 16:42
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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.
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#379
by
rdale
on 06 Aug, 2010 19:08
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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.
