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#40
by
Joffan
on 14 Jun, 2007 15:01
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Would restowing and removing S3/4, flying it down or jettisoning, be a remote contingency? Or is that basically the same as abandoning further development on the ISS?
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#41
by
Jorge
on 14 Jun, 2007 15:10
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Joffan - 14/6/2007 10:01 AM
Would restowing and removing S3/4, flying it down or jettisoning, be a remote contingency?
Not just no, but "hell no". At most they will disconnect the power coming from it.
Or is that basically the same as abandoning further development on the ISS?
Yes. Without the additional power provided by S3/S4, the Japanese and European labs cannot be powered, therefore it would be pointless to launch them.
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#42
by
whitewatcher
on 14 Jun, 2007 15:11
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Joffan - 14/6/2007 5:01 PM
Would restowing and removing S3/4, flying it down or jettisoning, be a remote contingency? Or is that basically the same as abandoning further development on the ISS?
No S3/4 = 50% power in the american segment = not enough power for Columbus and Kibo = at least a large delay = probably ESA and JAXA giving up their ISS programmes
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#43
by
bsegal
on 14 Jun, 2007 15:21
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Looking ahead to tomorrow's EVA, new summary timeline for the EVA is:
2:30 for OMS Pod repair work by Olivas. Reilly assisting in setup/cleanup for first and last 30 minutes.
While Olivas does the OMS pod work, Reilly to spend 1:30 on H2O/H2 Vent Valve R&R.
When both of those tasks are done, 3 hours scheduled for 2B retract activities for both.
Time permitting, additional tasks are listed as SARJ launch restraint removals for 1 hr, S3 drag link/keel pin stow for 1 hr, and S3/S4 closeout for 50 minutes.
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#44
by
Chris Bergin
on 14 Jun, 2007 15:36
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Speedracer - 14/6/2007 2:36 PM
According to CNN, Reuters, and several other outlets, this may be a big day trying to get computers back up and running or else abandon the station... 
What exactly is going on? How serious is it compared to the media hype?
I would urge caution when reading such reports (and I know you'll know to do so anyway).
They'll solve this problem. The Russians appear very confident they'll get it licked.
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#45
by
rcaron
on 14 Jun, 2007 15:42
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I still think all this talk of abandoning is a bit overkill, but anybody remember the Interim Control Module that we had the Naval Research Lab build? It was basically a large propulsive unit that was to connect to Node 1 in lieu of the Russian segment since it was suffering such huge delays. It didn't provide any pressurized volume.
I always have had a soft spot for station hardware that never flies (I believe there's a spare FGB too), so best I could gather the ICM is complete and in storage near D.C. That sure would be handy on a day like today.
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#46
by
DaveS
on 14 Jun, 2007 15:44
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rcaron - 14/6/2007 5:42 PM
(I believe there's a spare FGB too),.
FGB-2 has been redesignated the Multi-purpose Laboratory Module(MLM).
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#47
by
DaveS
on 14 Jun, 2007 15:47
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Getting ready for more 2B array retract.
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#48
by
ApolloLee
on 14 Jun, 2007 16:04
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Speedracer - 14/6/2007 6:36 AM
According to CNN, Reuters, and several other outlets, this may be a big day trying to get computers back up and running or else abandon the station...
What exactly is going on? How serious is it compared to the media hype?
Well, frankly, it was being hyped up in the Day 6 live update as well so don't just blame the media (which sparked my terse reply in the day 6 thread)
As for getting the computers back up...... Yippie but they should never try installing Vista again.
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#49
by
ApolloLee
on 14 Jun, 2007 16:06
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Spiff - 14/6/2007 7:07 AM
I would expect Russian computers to boot in Russian. So I would think not.
So they were just running Tetris then?
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#50
by
Chandonn
on 14 Jun, 2007 16:08
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ApolloLee - 14/6/2007 12:04 PM
Yippie but they should never try installing Vista again.
Quick OT from a guy who sells computers: Actually, Vista's problems are usually related to 3rd party venders and services not being fully ready for the new OS.
In this case it would mean S3/4 needs Vista-compatable drivers. :laugh:
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#51
by
Chris Bergin
on 14 Jun, 2007 16:09
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Ok, not long (about 25 minutes) to array retract:
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#52
by
ApolloLee
on 14 Jun, 2007 16:12
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OK... to join in with the doom and gloomers...... If this computer failure were to happen without Atlantis docked, what would have happened?
Might they now consider sending up a back-up system before the shuttles retire?
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#53
by
Norm Hartnett
on 14 Jun, 2007 16:18
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Any bets on how many bays they get this time?
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#54
by
whitewatcher
on 14 Jun, 2007 16:19
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ApolloLee - 14/6/2007 6:12 PM
Might they now consider sending up a back-up system before the shuttles retire?
No, I guess a (maybe slightly modified) ATV docked to Node2 could do the job AND provide additional storage volume.
That's what the ATV platform has been developed for.
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#55
by
Norm Hartnett
on 14 Jun, 2007 16:20
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ApolloLee - 14/6/2007 9:12 AM
OK... to join in with the doom and gloomers...... If this computer failure were to happen without Atlantis docked, what would have happened?
Might they now consider sending up a back-up system before the shuttles retire?
CMGs could maintain attitude for some period of time prior to requiring attitude burns. Probably sufficent time to recover computers again. It is worth noting that it is unlikely to be a problem with the computers themselves as it is unlikely to have six, three each in two seperate systems, fail. It is much more likely to be a network/communications bus problem. How robust these are and how vuneralable to dirty power or data they are is open to question.
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#56
by
kneecaps
on 14 Jun, 2007 16:25
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The International Space Station Guidance, Navigation, and Control Training Manual provides some good information, and shows why the US ACS requires data from the Russian computers to function.
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#57
by
Lee Jay
on 14 Jun, 2007 16:25
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whitewatcher - 14/6/2007 10:19 AM
ApolloLee - 14/6/2007 6:12 PM
Might they now consider sending up a back-up system before the shuttles retire?
No, I guess a (maybe slightly modified) ATV docked to Node2 could do the job AND provide additional storage volume.
That's what the ATV platform has been developed for.
Can the ATV actually provide attitude control? From where would it get its commands?
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#58
by
Chris Bergin
on 14 Jun, 2007 16:27
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Retaction start. One bay already.
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#59
by
whitewatcher
on 14 Jun, 2007 16:27
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btw, esa website says the ATV Jules Verne launch has been delayed from November to Mid-Jan 2008.
They say it doesn't fit into the schedule, but I've heard rumors that they cannot deliver it to Kourou by plane. It was designed to be transported by ship and that's what they'll do. But it takes longer. There are some other rumors around.....
Maybe this indicates a delay in the shuttle schedule, too, because NASA is not to enthusiastic to launch an IP's module which the IP cannot supply.
