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#260
by
on 24 Mar, 2007 02:08
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so are they going to do the repairs on the tank till they decide to keep the tank, or will they start the repaires when the decision is made? Hope everything works with ET-124 and Atlantis!
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#261
by
Chris Bergin
on 24 Mar, 2007 02:11
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Justin Wheat - 24/3/2007 3:08 AM
so are they going to do the repairs on the tank till they decide to keep the tank, or will they start the repaires when the decision is made? Hope everything works with ET-124 and Atlantis!
Yes, they are continuing to work repairs on the tank regardless.
It's all moving more towards an ET swap today, on the latest info coming in (L2), but they've got a couple of weeks before they need to make the final decision.
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#262
by
on 24 Mar, 2007 02:29
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if it is going to be an ET swap there is no way that they can make a launch until June? I hope an ET swap doesn't have to happen!
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#263
by
Chris Bergin
on 24 Mar, 2007 02:37
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Justin Wheat - 24/3/2007 3:29 AM
if it is going to be an ET swap there is no way that they can make a launch until June? I hope an ET swap doesn't have to happen!
Na, the way it'll work is:
Repair ET-124 on the current estimated plan: NET May 11 ish.
Swap to ET-117: NET June 6 (this is an official date as of today on L2 documentation).
Remember, STS-117's SRB motors are out of date in July, so it really can't slip past June anyway.
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#264
by
paulhbell07
on 24 Mar, 2007 11:37
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I didn't know that the SRB's had a 'use by date'. Let's hope that they get of the ground before July, otherwise the schedule would be up the creek for the rest of the year.
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#265
by
shuttlefan
on 24 Mar, 2007 12:28
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paulhbell07 - 24/3/2007 7:37 AM
I didn't know that the SRB's had a 'use by date'. Let's hope that they get of the ground before July, otherwise the schedule would be up the creek for the rest of the year.
I think once the stacked SRBs have passed their ' shelf life ', they have to be destacked and sent back to Thiokol for refurbishment.
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#266
by
Lee Jay
on 24 Mar, 2007 12:47
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Can the tank get the MAF, get repaired and get back in time to be the LON tank if 117 launches on June 6? I'm adding up the weeks and it seems like this would have to be a fast turnaround from MAF.
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#267
by
Thorny
on 24 Mar, 2007 13:44
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Lee Jay - 24/3/2007 8:47 AM
Can the tank get the MAF, get repaired and get back in time to be the LON tank if 117 launches on June 6? I'm adding up the weeks and it seems like this would have to be a fast turnaround from MAF.
Wouldn't the STS-120 Tank (previously scheduled for launch in August anyway) be the LON ET?
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#268
by
jacqmans
on 24 Mar, 2007 16:27
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Chris Bergin - 24/3/2007 5:37 AM
Remember, STS-117's SRB motors are out of date in July, so it really can't slip past June anyway.
How new is this...
STS-1 was rolled out to the pad in November 1980 (with stacking in September/October, I think) and launched in April 1981...So from October to April is 7+ months
STS-117 was stacked in January/February so I would say August 2007 is the 7+ month
Anyone can say more about this...
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#269
by
Chris Bergin
on 24 Mar, 2007 17:31
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Moving a slide off L2 to explain the booster motor life issue:
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#270
by
Lee Jay
on 24 Mar, 2007 17:53
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Wow...they were built almost five years ago.
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#271
by
sts1canada
on 24 Mar, 2007 19:48
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I believe I read somewhere that the 5 year requirement for using the SRB segments is because there are concerns of the insulation inside the SRB walls starting to debond and the propellant grain developing cracks. They would have to be destacked and returned to Thiokol in Utah for inspections etc. The STS-118 SRB segments are now all at KSC unstacked and they could be used for STS-117 in an extreme worst case scenario (emphasis on extreme!).
Richard
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#272
by
Thorny
on 24 Mar, 2007 21:44
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jacqmans - 24/3/2007 12:27 PM
STS-1 was rolled out to the pad in November 1980 (with stacking in September/October, I think) and launched in April 1981...So from October to April is 7+ months
STS-1 rolled out to Pad 39A on December 29, 1980.
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#273
by
paulhbell07
on 25 Mar, 2007 13:35
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Have any SRB segments been returned because of the date issue.
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#274
by
shuttlefan
on 25 Mar, 2007 14:31
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paulhbell07 - 25/3/2007 8:35 AM
Have any SRB segments been returned because of the date issue.
I BELIEVE after the STS-107 disaster. The entire vehicle for the original STS-114 mission had already been stacked in the VAB at the time. Atlantis had been mated to the ET 3 days prior to the loss of Columbia. That entire vehicle was destacked.
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#275
by
norm103
on 25 Mar, 2007 23:33
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the stack that was fisrt done for sts 114 was reuned to the vender and they used them in one of there hot fire test. i believe it was the one to test lighting for night launches.
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#276
by
Chris Bergin
on 26 Mar, 2007 16:02
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The latest is they are still working towards the mid May launch date.
I'll write up the options, quotes from managers in a few hours.
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#277
by
DaveS
on 26 Mar, 2007 16:13
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Chris Bergin - 26/3/2007 6:02 PM
The latest is they are still working towards the mid May launch date.
Well, that's in line with what was decided last Wednesday. Actual decision about the fate of the May window will be taken in April 10 when ET-117 arrives at KSC.
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#278
by
Chris Bergin
on 26 Mar, 2007 16:33
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DaveS - 26/3/2007 5:13 PM
Chris Bergin - 26/3/2007 6:02 PM
The latest is they are still working towards the mid May launch date.
Well, that's in line with what was decided last Wednesday. Actual decision about the fate of the May window will be taken in April 10 when ET-117 arrives at KSC.
As you know, I'm refering to the Paul Hill notes, which are from Saturday.
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#279
by
shuttlefan
on 27 Mar, 2007 01:25
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If they would decide NOT to swap ETs, would they possibly perform a tanking test on the repaired tank once back on the pad, to test the repairs, to see if they will stand up to the tanking cycle?