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#80
by
michelle21
on 15 Jun, 2007 15:39
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bsegal - 15/6/2007 11:33 AM
koshk - 15/6/2007 10:57 AM
QUICKLY write software to have U.S. computers that are unaffected by this to assume minimal command and control functions of the Russian segment until new flight hardware can be brought up on a Progress.
.
Those systems would have to be somewhat compatable to begin with, and I doubt that. I take it these aren't your average off the self computers.
What interface are they connected with to the thrusters.
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#81
by
bsegal
on 15 Jun, 2007 15:41
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Squid.erau - 15/6/2007 11:38 AM
Not to be a spoil sport, but can we please try and keep this thread on-topic, i.e stuff the crew is doing on station and shuttle. I'm pretty sure there is a seperate thread for discussions about the computer problems. Thanks.
Matt
If there's a separate thread, point us to it. In the meantime, the shuttle actually IS docked to the ISS while all this is going on, and it is having a real impact on shuttle ops and when they might be able to leave.
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#82
by
Zachstar
on 15 Jun, 2007 15:42
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Starting to get that "EVA" sound.
Sounds good!
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#83
by
eeergo
on 15 Jun, 2007 15:43
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#84
by
bsegal
on 15 Jun, 2007 15:44
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TrueBlueWitt - 15/6/2007 11:38 AM
koshk - 15/6/2007 10:57 AM
The other thought that must be in discussion - but we've not heard about so far - would be have EVA4 devoted to de-mating the connections that plugged-in the new array, which seemed to be the jumping off point for the computer issues.
Detatching the new array's power couplings would likely be pointless.. the Russian computers did not come back up correctly even when they were decoupled from the US side of the station's power grid. They may've gotten fried whenthe array was first connected, but disconnecting the array now doesn't look to me like it would do anything to clear up the issue.
You're probably right. Only thing I was thinking was there may be a trip circuit somewhere between interfact of the new truss/array and the internal circuitry in the node. If you unplugged the new power at its source, you'd eliminate that as a possibility.
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#85
by
Squid.erau
on 15 Jun, 2007 15:46
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Thanks David, i couldn't find that thread on my first look-see
Matt
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#86
by
eeergo
on 15 Jun, 2007 15:46
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Great work with the images, Zachstar, by the way. These days are being quite stressful for me (exams, you know
) and it's priceless to have all the images and summaries you post ready when time's available!
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#87
by
TrueBlueWitt
on 15 Jun, 2007 15:49
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bsegal - 15/6/2007 11:44 AM
TrueBlueWitt - 15/6/2007 11:38 AM
koshk - 15/6/2007 10:57 AM
The other thought that must be in discussion - but we've not heard about so far - would be have EVA4 devoted to de-mating the connections that plugged-in the new array, which seemed to be the jumping off point for the computer issues.
Detatching the new array's power couplings would likely be pointless.. the Russian computers did not come back up correctly even when they were decoupled from the US side of the station's power grid. They may've gotten fried whenthe array was first connected, but disconnecting the array now doesn't look to me like it would do anything to clear up the issue.
You're probably right. Only thing I was thinking was there may be a trip circuit somewhere between interfact of the new truss/array and the internal circuitry in the node. If you unplugged the new power at its source, you'd eliminate that as a possibility.
I know in the auto industry there are groups devoted to running sneak circuit analysis(several commercial codes available) and monte carlo simulations based on possible variations for each component(and grounds) to check for "leakage" or "feedback".
I would think NASA would have their own team devoted to running such simulations.
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#88
by
Zachstar
on 15 Jun, 2007 15:50
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Image of Atlantis & Earth.
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#89
by
eeergo
on 15 Jun, 2007 15:52
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Go for repress, ready to open the starboard hatch of the Node (the one that opens to Quest) This is done to allow the spacewalkers' assistants get out before airlock depress.
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#90
by
Zachstar
on 15 Jun, 2007 15:55
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#91
by
Zachstar
on 15 Jun, 2007 15:59
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Hatch open.
Preparing to close the hatch for final depress.
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#92
by
on 15 Jun, 2007 16:18
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mission status briefing 11:30 a.m. CT / 12:30 p.m. ET
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#93
by
Chris Bergin
on 15 Jun, 2007 16:20
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Zachstar - 15/6/2007 4:55 PM
Ok the busy stuff is about to start.
Please keep the computer discussion on the correct topic please!
http://forum.nasaspaceflight.com/forums/thread-view.asp?tid=8402
This will really help you and me.
I'd like to echo this. It's going to be a very eventful FD for the repair and EVA-3 so this should be dedicated to that.
Please note this as we can't move posts between sections, so they'll be deleted.
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#94
by
Chandonn
on 15 Jun, 2007 16:26
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Understandably, there has been some shuffling around of the EVA. What is the current plan for today? blanket repair first, 2B retraction, etc.?
EDIT: still combing articles trying to get a sense of the flow. I am unaware of the 2b retraction window for today as well...
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#95
by
on 15 Jun, 2007 16:30
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the blanket repair and the hydrogen vent valve will be first; then the 2B retraction will be in work for the rest of the EVA.
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#96
by
DaveS
on 15 Jun, 2007 16:30
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Chandonn - 15/6/2007 6:26 PM
Understandably, there has been some shuffling around of the EVA. What is the current plan for today? 2B retraction first, blanket repair, etc.?
OMS pod repair work will be done at the same time has the H2 vent valve installation on Destiny.
Then it's on to P6 and perform some EV assistance with the 2B array. And that's pretty much EVA-3.
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#97
by
jaredgalen
on 15 Jun, 2007 16:31
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Are they removing the last few launch restraints??
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#98
by
Zachstar
on 15 Jun, 2007 16:33
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Briefing about to start.
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#99
by
Norm Hartnett
on 15 Jun, 2007 16:36
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No SARJ work scheduled for this EVA, jaredgalen.
