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#260 by psloss on 09 Dec, 2007 12:34
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ETEE - 9/12/2007 8:33 AM
Whichever integration cell is open.
If they roll back for repairs which High Bay will the stack end up in?
Edit -- the 123 boosters are being stacked in HB 1, so that would be HB 3.
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#261 by Ford Mustang on 09 Dec, 2007 12:36
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Well, this is a 'surprise'...
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#262 by psloss on 09 Dec, 2007 12:37
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Ford Mustang - 9/12/2007 8:36 AM
Not to this geek...seen it before.
Well, this is a 'surprise'...
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#263 by William Graham on 09 Dec, 2007 12:42
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It's probably already been asked, but why can't they just increase the number of sensors?
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#264 by John44 on 09 Dec, 2007 12:43
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video
STS-122 - Atlantis Status Update December 9
http://www.space-multimedia.nl.eu.org/index.php?option=com_content&task=view&id=3188&Itemid=2 -
#265 by psloss on 09 Dec, 2007 12:45
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GW_Simulations - 9/12/2007 8:42 AM
Even if they could do so hypothetically, it doesn't solve the problem. The system already has a lot of redundancy and any circuits you add could behave just like the #3 one is currently or like the #4 did on Thursday.
It's probably already been asked, but why can't they just increase the number of sensors?
It would also increase overall complexity and add additional failure modes.
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#266 by MKremer on 09 Dec, 2007 12:46
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GW_Simulations - 9/12/2007 7:42 AM
The whole orbiter hw & sw system is only designed for 4.
It's probably already been asked, but why can't they just increase the number of sensors?
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#267 by Jim on 09 Dec, 2007 12:59
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dabella - 9/12/2007 8:25 AM
Well, if this is a complex problem that is repeating over time and is a security issue and the root cause is unknown, imho, its a good idea to pause the program until a fix or a replacement to the system is found...
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Security issue? -
#268 by 8900 on 09 Dec, 2007 12:59
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does anyone know why the ECO sensor always get into trouble?
It seems that the same problem strike many shuttle launches -
#269 by psloss on 09 Dec, 2007 13:03
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8900 - 9/12/2007 8:59 AM
Incorrect -- they don't always get into trouble and it hasn't been many. This is only the fourth stack with "trouble."
does anyone know why the ECO sensor always get into trouble?
It seems that the same problem strike many shuttle launches
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#270 by Chris Bergin on 09 Dec, 2007 13:03
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Looks like better news on the LOX ECO 3 issue. It's been classed as a possible independent SIM command console issue and not a sensor fault. (i.e. KSC sent the command, without telling the other centers, so some consoles flash it as an issue, when it was commanded to go DRY, rather than failing DRY).
They are evaluating what happened, but that is more hopeful! :cool:
Of course, that doesn't change the LH2 ECO issue. -
#271 by rdale on 09 Dec, 2007 13:05
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MMT did start at 9am per ISS comms, 24-hr turnaround is the current posture but "will know more in an hour or two"
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#272 by ShuttleDiscovery on 09 Dec, 2007 13:07
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Are we saying there is a chance for tommorow?
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#273 by ntschke on 09 Dec, 2007 13:07
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psloss - 9/12/2007 9:03 AM
Quote8900 - 9/12/2007 8:59 AM does anyone know why the ECO sensor always get into trouble? It seems that the same problem strike many shuttle launches
Incorrect -- they don't always get into trouble and it hasn't been many. This is only the fourth stack with "trouble."And I belive these issues have all come AFTER RTF. I'm sure they've looked into it but there must be some significance to that. Either the tanks/sensors reached a threshold of viability or...maybe there were some design change made?
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#274 by Chandonn on 09 Dec, 2007 13:09
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psloss - 9/12/2007 9:03 AM
Quote8900 - 9/12/2007 8:59 AM
Incorrect -- they don't always get into trouble and it hasn't been many. This is only the fourth stack with "trouble."
does anyone know why the ECO sensor always get into trouble?
It seems that the same problem strike many shuttle launches
I'm still betting that this is a wiring issue related to the RTF mods on the ET. -
#275 by psloss on 09 Dec, 2007 13:10
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ntschke - 9/12/2007 9:07 AM
No idea -- that's what they've been trying to answer since April, 2005.And I belive these issues have all come AFTER RTF. I'm sure they've looked into it but there must be some significance to that. Either the tanks/sensors reached a threshold of viability or...maybe there were some design change made?
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#276 by ShuttleDiscovery on 09 Dec, 2007 13:10
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Yeah I thought it was something to do with the post-Columbia mods too as this hasn't really been an issue before...
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#277 by collectSPACE on 09 Dec, 2007 13:16
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Officially announced at KSC press site: NET January 2.
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#278 by Chris Bergin on 09 Dec, 2007 13:20
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collectSPACE - 9/12/2007 2:16 PM
Officially announced at KSC press site: NET January 2.
Thanks Robert, so that'll currently point towards a plan of troubleshooting at the pad, for now. -
#279 by Reno on 09 Dec, 2007 13:25
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Excuse my lack of understanding but what does NET mean?
