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#20 by Chris Bergin on 08 Jun, 2007 14:56
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Felix - 8/6/2007 3:42 PM
Should have wet ECO sensors by now and should be in fast fill within the next ten minutes. Still waiting for confirmation
The test is that the ECOs go WET, but that they can command them to go DRY and then WET (capitals on purpose as that's how it reads) during SIM tests.
We're waiting for confirmation. -
#21 by AstroRJY on 08 Jun, 2007 15:03
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Could someone give a good explanation of how and where the cyrogenics flow from the dewars up through the MLP and how does the fuel get inot the tank? Does it flow through the Tail Serviec Masts and into the orbiter before eventually reaching the tanks? If someone could give us a few notes, for the benefit of everyone who may be wondering or uncertain.
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#22 by Felix on 08 Jun, 2007 15:10
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Pictures of RSS retract
http://mediaarchive.ksc.nasa.gov/search.cfm?cat=71 -
#23 by Chris Bergin on 08 Jun, 2007 15:20
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Worth noting:
During ET-124 Debris Inspection, a 3/4" drip off of ration foam component was spotted in the Intertank Flange between the LH2 tank and intertank and 3 stringers +Z of the -Y thrust panel. No requirement for removal. Good for flight. -
#24 by bsegal on 08 Jun, 2007 15:28
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ECO sensors?
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#25 by Chris Bergin on 08 Jun, 2007 15:31
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bsegal - 8/6/2007 4:28 PM
ECO sensors?
Shuttle Q&A, Search function on the site, etc.etc. Much faster for your needs.
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#26 by DaveS on 08 Jun, 2007 15:32
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The ET tanking activities takes around 3 hours to complete. With tanking starting at 9:55 am EDT, tanking completion is around 1 pm EDT.
Right now at 11:32 am EDT, about half-way through. -
#27 by Chris Bergin on 08 Jun, 2007 15:38
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MMT called for 4pm local. Dissent with the MLS issue, will be discussed. More soon.
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#28 by bsegal on 08 Jun, 2007 15:38
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Chris Bergin - 8/6/2007 11:31 AM
Quotebsegal - 8/6/2007 4:28 PM
ECO sensors?
Shuttle Q&A, Search function on the site, etc.etc. Much faster for your needs.
Understand what they are for and how they function. Was trying to find out whether they tested out ok during the tanking. -
#29 by psloss on 08 Jun, 2007 15:40
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bsegal - 8/6/2007 11:38 AM
We may be in "no news is good news" territory with this.
Understand what they are for and how they function. Was trying to find out whether they tested out ok during the tanking.
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#30 by DaveS on 08 Jun, 2007 15:42
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Now at T-4 hours and counting.
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#31 by Chandonn on 08 Jun, 2007 15:43
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bsegal - 8/6/2007 11:38 AM
QuoteChris Bergin - 8/6/2007 11:31 AM
Quotebsegal - 8/6/2007 4:28 PM
ECO sensors?
Shuttle Q&A, Search function on the site, etc.etc. Much faster for your needs.
Understand what they are for and how they function. Was trying to find out whether they tested out ok during the tanking.
Common rule of thumb: with the diluge of information on this site, if you don't hear anything it's safe to assume everything is going nominally. -
#32 by Chris Bergin on 08 Jun, 2007 15:43
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50 percent on LOX.
SIM command test not carried out yet, but will be soon.
No need to ask, we'll be noting everything that comes in. -
#33 by kneecaps on 08 Jun, 2007 15:47
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AstroRJY - 8/6/2007 4:03 PM
Could someone give a good explanation of how and where the cyrogenics flow from the dewars up through the MLP and how does the fuel get inot the tank? Does it flow through the Tail Serviec Masts and into the orbiter before eventually reaching the tanks? If someone could give us a few notes, for the benefit of everyone who may be wondering or uncertain.
Pipelines on the MLP lead to the Tail Service Mast T-0 umbilicals, The LOX and LH2 enters the orbiter MPS plumbing (Aft Section) here, via the inboard/outboard fill/drain piping. From this point the LOX and LH2 head to the 17inch disconnects which then feed into the et LOX and LH2 tanks.
LOX and LH2 enter on different TSMs...I think its LOX on the left and LH2 on the right.
P.S. I wouldn't give these answers late in the count (of course), but I think a bit of tech info is helpful. (But the QA thread and various docs are better sources
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#34 by Chris Bergin on 08 Jun, 2007 15:54
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OPO (Orbiter Project Office) meeting at 1pm Eastern to discuss their position of "no confidence" in MLS (Microwave Landing System - see articles on site).
This was noted in the tanking teleconference (transcript on L2).
Worst case scenario is a 24 hour scrub. -
#35 by psloss on 08 Jun, 2007 15:56
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Chris Bergin - 8/6/2007 11:43 AM
Is that a procedural change -- weren't they testing those sensors much earlier in the count?
50 percent on LOX.
SIM command test not carried out yet, but will be soon.
No need to ask, we'll be noting everything that comes in.
Thanks.
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#36 by Chris Bergin on 08 Jun, 2007 16:00
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psloss - 8/6/2007 4:56 PM
QuoteChris Bergin - 8/6/2007 11:43 AM
Is that a procedural change -- weren't they testing those sensors much earlier in the count?
50 percent on LOX.
SIM command test not carried out yet, but will be soon.
No need to ask, we'll be noting everything that comes in.
Thanks.
I'm asking, but we have no notes of a 5 percent SIM test (I believe that was how they did it for 116). Bottom line is I'm only posting what I'm being sent (rather than assuming), but if I was to assume, they may have had an earlier SIM test, but all went well and simply wasn't noted.
That is a good case of no news (on that) being good news. -
#37 by Carl G on 08 Jun, 2007 16:01
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#38 by Chris Bergin on 08 Jun, 2007 16:03
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The big test for the MLS is element powerup at T-3 hours.
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#39 by AstroRJY on 08 Jun, 2007 16:40
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Thanks Kneecaps, yes I can see some of the fuel lines on the right-hand and front side of the MLP. When they have the cameras close enough you can see showers of ice falling off those lines when the SSMEs start. Hope we go tonight. Should be interesting lighitng; launching 45 minutes before sundown.
