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#200
by
DaveS
on 14 Jun, 2007 22:32
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Gary - 15/6/2007 12:26 AM
Just had a thought - If the new solar array is guilty of crashing the russian computer systems could it have had the same effect on the shuttle computers if Atlantis had SSPTS fitted?
No. The appearant thinking right now is that some electrical noise caused the SM the computers to die.
As KSC is located in the "Lightning Capital" of the US, the Shuttle GPCs got to be electrically hardended.
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#201
by
Chris Bergin
on 14 Jun, 2007 22:35
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triddirt - 14/6/2007 11:31 PM
OK... I'm confused...
Doesn't this information that the computers have been offline during the day conflict with the information provided at the press conference earlier with Gerst
Na, Gerst said they were up for 8 minutes, but then went down again.
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#202
by
Ankle-bone12
on 14 Jun, 2007 22:36
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Does anyone know why the FD mission highlights was an hour early last night? will it be the same tonight?
sorry for off-topicness
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#203
by
DaveS
on 14 Jun, 2007 22:37
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Chris Bergin - 15/6/2007 12:35 AM
triddirt - 14/6/2007 11:31 PM
OK... I'm confused...
Doesn't this information that the computers have been offline during the day conflict with the information provided at the press conference earlier with Gerst
Na, Gerst said they were up for 8 minutes, but then went down again.
Nitpick: 7 minutes, then went down and remained that way ever since.
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#204
by
triddirt
on 14 Jun, 2007 22:38
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Chris Bergin - 14/6/2007 6:35 PM
Na, Gerst said they were up for 8 minutes, but then went down again.
OK.. Thanks for clarification Chris... I was at work so I must not have quite caught the whole gist..
Oh well... Guess that's why they call them rocket scientists... Time to get their genius on.
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#205
by
DaveS
on 14 Jun, 2007 22:38
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Ankle-bone12 - 15/6/2007 12:36 AM
Does anyone know why the FD mission highlights was an hour early last night? will it be the same tonight?
sorry for off-topicness
It depends on when the crew(s) go to sleep. It's usually first shown at crew sleep+1 hour.
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#206
by
gordo
on 14 Jun, 2007 22:40
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Q for the Status briefing if anyone here is there.
Do we think that there is a chance here that they might decided to uncouple the S3/4 electrical connections and re-extend the P6 array, if the computers are getting the noise from the new truss' electrical systems? This would give time for some filters to be installed on the PSUs to the computers
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#207
by
Zachstar
on 14 Jun, 2007 22:43
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zinfab - 14/6/2007 5:31 PM
they suggest that there is noise in the lines running from the arrays to the power supply of the computers. they state that the power supply is susceptible to "noise" and that while no power was running at the time of failure, they had just finished "attach." They hypothesize that the lines created a conduit for "noise."
*zach's summary more clear, i think*
Sorry about that. I've just cleaned it up somewhat.
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#208
by
Zachstar
on 14 Jun, 2007 22:45
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Briefing coming up shortly.
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#209
by
Zachstar
on 14 Jun, 2007 22:51
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#210
by
Zachstar
on 14 Jun, 2007 22:53
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#211
by
Zachstar
on 14 Jun, 2007 22:58
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#212
by
Zachstar
on 14 Jun, 2007 23:14
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Sorry everyone! I was planning on doing a quick downconvert of my briefing recording but the net junked out and my recording was ruined
Can someone provide a description while we await john44 posting the video?
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#213
by
Ankle-bone12
on 14 Jun, 2007 23:17
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some idiot reporter has no idea what is going on. he thinks noise as in loudness.
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#214
by
kneecaps
on 14 Jun, 2007 23:18
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Lol...what reporter embarrassed themselves with the audible 'noise' queston
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#215
by
jaredgalen
on 14 Jun, 2007 23:19
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How possible is it that the crossed DLA could have an affect on power 'noise' or is that just a silly. I'm not quite well informed on the tech specs of a DLA when it's at home
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#216
by
kneecaps
on 14 Jun, 2007 23:26
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jaredgalen - 15/6/2007 12:19 AM
How possible is it that the crossed DLA could have an affect on power 'noise' or is that just a silly. I'm not quite well informed on the tech specs of a DLA when it's are at home
Take it from my personal experience, 'noise' and 'noise' faultfinding/troubleshooting is a dark art. Sometimes the cause of noise can be obvious in an electrical system...sometimes the cause can be nearly unbelievable.
What concerns me is, if the DLA is indeed physically 'cross-wired', then it makes me raise the question, whats the rest of the QA on that truss like? There could be a lot of trouble spots (sloppy cable runs etc).
I must stress however, despite working with QA on electronic systems...NONE of them are aerospace related so i'm just speculating.
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#217
by
Ankle-bone12
on 14 Jun, 2007 23:36
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Question: why don't they replace the computers on an upcoming flight? they seem extremely outdated.
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#218
by
stockman
on 14 Jun, 2007 23:36
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This DLA reversal is just impossible for me to understand. Even if something like that could happen in manufacturing, aren't there many, many integration tests on these things before they are certified??? I would have expected (maybe naively) that a cross wiring on one of the MAJOR components of this trust would have been tripped over way before now.. What am I missing with this??
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#219
by
jaredgalen
on 14 Jun, 2007 23:38
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Some how I doubt it's just a matter of replacing with newer machines. I'd imagine these have to be tried and tested and ultra reliable (bar power noise...whoops!!) plus a bit of radiation hardening or good measure. Not off the shelf stuff and not replaced that readily
