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#40
by
psloss
on 08 Dec, 2007 21:29
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Not a lot of news coming out of Q&A. Currently going over "what ifs" with respect to losing the low-level cutoff system.
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#41
by
C5C6
on 08 Dec, 2007 21:38
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do we have a precise launch time? in case not, why and when we'll know?
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#42
by
apollo13
on 08 Dec, 2007 21:41
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3:21 EDT.
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#43
by
DaveS
on 08 Dec, 2007 21:41
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C5C6 - 8/12/2007 11:38 PM
do we have a precise launch time? in case not, why and when we'll know?
Currently it is 3:21:01 pm EST, this is not set in stone. This will be refined during the T-20 minute and T-9 minute holds tommorow.
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#44
by
DaveS
on 08 Dec, 2007 21:41
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apollo13 - 8/12/2007 11:41 PM
3:21 EDT.
EST! EDT ended a while ago!
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#45
by
psloss
on 08 Dec, 2007 21:43
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Question in the briefing about the launch window...it will open at the in-plane time and the close will be approx. 60 seconds after that. The duration will be based on how much of a performance loss was agreed on in the plan. (Maybe Chris has that in the L2 docs.) The in-plane time will be finalized during terminal count tomorrow (assuming they get there), but the times already posted online are likely still reasonable approximations.
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#46
by
psloss
on 08 Dec, 2007 21:46
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I think Doug Lyons said the first SIM test on the LH2 ECOs tomorrow would be when they are covered with propellant...approx. 45 minutes into tanking. (Not sure I heard that right.)
The briefing just concluded.
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#47
by
Ford Mustang
on 08 Dec, 2007 21:47
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#48
by
Ford Mustang
on 08 Dec, 2007 21:51
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And.. appropriately..
Atlantis at the pad, with sunset in the background. :cool: Hopefully this'll be the last time we'll see this... until she launches again!
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#49
by
marshallsplace
on 08 Dec, 2007 21:54
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This launch now is on a pretty fundamental level (with regards to the last stand down).
A failure in STS-122's fail safe circuitry (ECO's) has actually increased the level of fail safe failure possibility now
It is good to see that the NASA team have reassured us that when the failsafe circuits go wrong - they go for maximum compliance
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#50
by
Mike_1179
on 08 Dec, 2007 22:05
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When would the RSS retract have to be to make tanking at ~06:00 EST?
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#51
by
Ford Mustang
on 08 Dec, 2007 22:06
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Mike_1179 - 8/12/2007 6:05 PM
When would the RSS retract have to be to make tanking at ~06:00 EST?
That's roughly an hour before when tanking was on Thursday, so possibly 7:00 PM EST. I'll have my eyes peeled.
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#52
by
apollo13
on 08 Dec, 2007 22:07
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Why do they need an RSS when the doors are closed and the module is bolted in?
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#53
by
on 08 Dec, 2007 22:14
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Ford Mustang - 8/12/2007 5:06 PMMike_1179 - 8/12/2007 6:05 PMWhen would the RSS retract have to be to make tanking at ~06:00 EST?
That's roughly an hour before when tanking was on Thursday, so possibly 7:00 PM EST. I'll have my eyes peeled.
In the conference, they said the RSS would be retracted at 11 p.m. EST, already noted in this thread
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#54
by
Michael22090
on 08 Dec, 2007 22:25
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apollo13 - 8/12/2007 5:07 PM
Why do they need an RSS when the doors are closed and the module is bolted in?
This should be in the Shuttle Q&A, but the RSS provides weather protection for the Orbiter and access for workers to get close to it. It contains the Payload Changeout Room, but that is only one of its functions.
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#55
by
Jim
on 08 Dec, 2007 22:31
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apollo13 - 8/12/2007 6:07 PM
Why do they need an RSS when the doors are closed and the module is bolted in?
The payload installation via the PCR only one of the tasks of the RSS. The RSS contains the OMBUU, which was used to topoff the H2 tanks of the PSRDS.
Weather protection is another task
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#56
by
MKremer
on 08 Dec, 2007 23:23
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Jim - 8/12/2007 5:31 PM
apollo13 - 8/12/2007 6:07 PM
Why do they need an RSS when the doors are closed and the module is bolted in?
The payload installation via the PCR only one of the tasks of the RSS. The RSS contains the OMBUU, which was used to topoff the H2 tanks of the PSRDS.
Weather protection is another task
Plus multiple levels to access all the necessary other locations all along the orbiter body for checks and things like filling the foward and OMS RCS propellents and installing the final closeout TPS locations (as well as removing the orbiter window covers and adding the fwd & aft RCS launch covers).
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#57
by
shuttlefan
on 09 Dec, 2007 00:49
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By when do they have to lower the beanie cap onto the tank?
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#58
by
punkboi
on 09 Dec, 2007 01:37
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Obviously before they begin tanking 6 AM, EDT, tomorrow morning
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#59
by
MKremer
on 09 Dec, 2007 01:51
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shuttlefan - 8/12/2007 7:49 PM
By when do they have to lower the beanie cap onto the tank?
I'm a bit surprised it's not already in position.
They have to at least have it in place before tanking ops start (ie- preps/chilldowns) just to make sure the seals are verified and the N2 purge flow is operating.
