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#220
by
on 18 Dec, 2007 16:28
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If this is the root cause, will they try to fix or go ahead and fly?
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#221
by
Chris Bergin
on 18 Dec, 2007 16:36
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Justin Wheat - 18/12/2007 5:28 PM
If this is the root cause, will they try to fix or go ahead and fly?
Good question. MMT will decide that....
Go for detanking (when inspection team is clear).
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#222
by
jeklund
on 18 Dec, 2007 16:37
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Do they have a fix that they could apply?
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#223
by
dember
on 18 Dec, 2007 16:42
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Could there be a rollback? I know Doug Lyons said that they could do the same stuff in the VAB that can be done out at the pad.
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#224
by
Flightstar
on 18 Dec, 2007 16:43
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dember - 18/12/2007 11:42 AM
Could there be a rollback? I know Doug Lyons said that they could do the same stuff in the VAB that can be done out at the pad.
If they R&R it. Replacing the connector does not mean you solve the problem.
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#225
by
Launch Fan
on 18 Dec, 2007 16:48
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Chris Bergin - 18/12/2007 11:24 AM
L2 sources note initial TDR data point to the problem being with the LH2 Feedthrough Connector.
This - at this stage - would confirm the engineering thought process on this prior to the tanking test:
http://www.nasaspaceflight.com/content/?cid=5309
This could get interesting, as extensive MSFC testing, gained via presentation slides on L2 yesterday, showed they could not find a problem with the connector during lab testing.
Good work! Whoever thought up these TDR troubleshoot should be having his back patted right now.
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#226
by
Chris Bergin
on 18 Dec, 2007 16:49
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ECO LH2 #3 has now failed.
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#227
by
Chris Bergin
on 18 Dec, 2007 16:50
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Inspection team has now left the pad and safing of the pad is now in progress - Diller.
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#228
by
Real Madrid
on 18 Dec, 2007 16:55
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Could they Launch Atlantis on 14th of January or could they delay the launch again.
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#229
by
Chris Bergin
on 18 Dec, 2007 16:57
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Real Madrid - 18/12/2007 5:55 PM
Could they Launch Atlantis on 14th of January or could they delay the launch again.
Eh? Who mentioned the 14th? The current target is Jan 10. The rest of your question is a moot point as we won't know anything on the plan until the MMT has decided.
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#230
by
Chris Bergin
on 18 Dec, 2007 16:58
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Draining the tank will start shortly.
Pending collecting more data on LH2 ECO #3 via TDR.
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#231
by
Real Madrid
on 18 Dec, 2007 17:00
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Chris Bergin - 18/12/2007 6:57 PM
Real Madrid - 18/12/2007 5:55 PM
Could they Launch Atlantis on 14th of January or could they delay the launch again.
Eh? Who mentioned the 14th? The current target is Jan 10. The rest of your question is a moot point as we won't know anything on the plan until the MMT has decided.
Sorry I am confused with the roll-out of space the shuttle Endeavour on 14 January .
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#232
by
Chris Bergin
on 18 Dec, 2007 17:02
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One launch at a time
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#233
by
Chris Bergin
on 18 Dec, 2007 17:04
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And draining of the tank has commenced.
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#234
by
Chris Bergin
on 18 Dec, 2007 17:09
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TDR being used as the detank. Could get interesting again when they get to the 5 percent level on the LH2.
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#235
by
Chris Bergin
on 18 Dec, 2007 17:22
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NASA TV end their tanking test coverage for the interim.
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#236
by
kimmern123
on 18 Dec, 2007 18:01
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Will there be a press briefing after the test is completed?
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#237
by
DaveS
on 18 Dec, 2007 18:02
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kimmern123 - 18/12/2007 8:01 PM
Will there be a press briefing after the test is completed?
Yes. NET 4:30 pm EST with Wayne Hale from JSC.
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#238
by
daveglo
on 18 Dec, 2007 18:29
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Personally, I think the behavior of the sensors as the tank is drained is more important than how they behave during filling.
But, as the rational says, at this point, just dump payload. Any word yet on what gets dropped from the manifest?
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#239
by
daj24
on 18 Dec, 2007 18:32
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I seem to remember some talk about the thought that when the feed through connectors reached thermo equilibrium that the problems may resolve themselves. Was there any indication/check of this? Or did the hard failure stay failed once they initially faulted?