Author Topic: STS-133: Troubleshooting and Pad Flow Latest/Updates  (Read 264585 times)

Offline stockman

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #60 on: 11/10/2010 01:21 pm »
current shot from this morning
« Last Edit: 11/10/2010 01:25 pm by stockman »
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Online Chris Bergin

Thanks GClark and Shuttlefan :) Seal coming out today.
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Offline joseamatos

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #62 on: 11/10/2010 02:04 pm »
Does anyone know when the technicians will determine how to fix the foam crack as well as making a decision to shoot for the November 30th launch window?

Offline stockman

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #63 on: 11/10/2010 02:15 pm »
wow.. talk about a pressure job - working on a critical piece of h/w.... webcams following your every move...Fellow engineers and management watching you up close and personal.. and now another camera man getting closeups...
« Last Edit: 11/10/2010 02:16 pm by stockman »
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Offline psloss

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #64 on: 11/10/2010 02:54 pm »
...and now another camera man getting closeups...
Anticipating some NASA TV Video File footage later on, perhaps this week.  (Which would mirror similar footage obtained and eventually shown during the previous two cases.)
« Last Edit: 11/10/2010 02:55 pm by psloss »

Online rdale

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #65 on: 11/10/2010 03:02 pm »
Does anyone know when the technicians will determine how to fix the foam crack as well as making a decision to shoot for the November 30th launch window?

Did you read the story?

http://www.nasaspaceflight.com/2010/11/sts-133-plan-to-repair-et-137-foam-cracks-at-pad/

Online DaveS

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #66 on: 11/10/2010 04:30 pm »
The 7" QD has now been removed from the GUCP!
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Online Chris Bergin

Bad news on the tank. How bad is TBD, but I'll write it up and publish hopefully within the hour. Too many leechers on twitter etc to post more at the moment and might start a frenzy without context.
« Last Edit: 11/11/2010 02:29 am by Carl G »
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Online Chris Bergin

Developing story, so short article to start with:

STS-133: Structural defect/crack found under foam damage:
http://www.nasaspaceflight.com/2010/11/sts-133-structural-defectcrack-found-on-et-137/
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Offline sdsds

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #69 on: 11/10/2010 05:55 pm »
Clarification requests:  is the photo a view into the valley between a "hat section" stringer (on the right) and some as-yet unremoved foam (on the left)?  Is the apparent crack thus in the part of the stringer that is nominally flat up against the skin underneath?
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Offline TheGame0135

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #70 on: 11/10/2010 05:56 pm »
I may be the narrow minded with this, but thank whatever god/person/unhuman thing you want to thank that they found this. I hope it's easily fixable and able to be in a timely fashion or, they're able to safe it to fly. Safety in my opinion, should always be #1 in any space program. Great work by the engineers and team at KSC. and great article (as always Chris, thought i'd help boost your ego some more ;-) ) Let the news flow in and no speculation about it. again great job to the NSF.com team for keeping us all up-to-date. very appreciated as always.

Developing story, so short article to start with:

STS-133: Structural defect/crack found under foam damage:
http://www.nasaspaceflight.com/2010/11/sts-133-structural-defectcrack-found-on-et-137/
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Offline csmjr91090

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #71 on: 11/10/2010 06:07 pm »
Great article Chris...I agree, safety should be #1 concern and we'll have to wait and see what pans out. Sure they have more than a few options to work with.


Offline Wayne Hale

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #72 on: 11/10/2010 06:33 pm »
This is troubling.  I don't recall ever having a problem with the metal.  A crack in the foam is relatively easy to understand and repair - relatively - but a crack in the metal structure of a stringer is going to take a significantly more difficult analysis.  Not only does this most likely have to be repaired - and that could be difficult - but understanding the root cause of the problem and developing flight rationale are going to be very difficult.  I am thinking that a launch this calendar year is in jeopardy.  Good luck to the team, if anybody can solve it the folks at MAF, MSFC, and the other centers can do it.  I hope I am being overly pessimistic and this turns out to be simple; but right now it doesn't look like it.

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #73 on: 11/10/2010 06:34 pm »
Developing story, so short article to start with:

STS-133: Structural defect/crack found under foam damage:
http://www.nasaspaceflight.com/2010/11/sts-133-structural-defectcrack-found-on-et-137/

Good notes in the article, covering the issue without inciting panic. 

I'll also point out that other space news outlets have not yet broken the story at all.  :)

Online Chris Bergin

This is troubling.  I don't recall ever having a problem with the metal.  A crack in the foam is relatively easy to understand and repair - relatively - but a crack in the metal structure of a stringer is going to take a significantly more difficult analysis.  Not only does this most likely have to be repaired - and that could be difficult - but understanding the root cause of the problem and developing flight rationale are going to be very difficult.  I am thinking that a launch this calendar year is in jeopardy.  Good luck to the team, if anybody can solve it the folks at MAF, MSFC, and the other centers can do it.  I hope I am being overly pessimistic and this turns out to be simple; but right now it doesn't look like it.

Thanks for commenting! And concur with the teams who'll be tasked with the get-well.
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Online Chris Bergin

Developing story, so short article to start with:

STS-133: Structural defect/crack found under foam damage:
http://www.nasaspaceflight.com/2010/11/sts-133-structural-defectcrack-found-on-et-137/

Good notes in the article, covering the issue without inciting panic. 


Thanks, that was important. We never sensationalize.
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Offline psloss

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #76 on: 11/10/2010 07:18 pm »
Update posted on NASA.gov a few minutes ago:
http://www.nasa.gov/shuttle

(or http://www.nasa.gov/rss/133_update.xml)

Quote
External Tank Cracks Identified, Repair Plans Being Evaluated
Wednesday, November 10, 2010 3:13 PM

This morning during removal of external fuel tank foam insulation, which cracked during draining operations following the shuttle Discovery’s launch scrub on Nov. 5., technicians identified two cracks on a section of the tank’s metal exterior. They were found on the stringer, which is the composite aluminum ring located on the top of the tank’s intertank area. The cracks are approximately 9 inches long. Engineers are reviewing images of the cracks to determine the best possible repair method, which would be done at Launch Pad 39A.

Crews have repaired similar cracks during external tank production by removing the cracked aluminum and replacing it with a “doubler,” which is a twice-as-thick stringer section before replacing the foam insulation. 

Exact schedules and repair options still are being evaluated.
« Last Edit: 11/10/2010 07:22 pm by psloss »

Offline robertross

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #77 on: 11/10/2010 07:39 pm »
Update posted on NASA.gov a few minutes ago:
http://www.nasa.gov/shuttle

(or http://www.nasa.gov/rss/133_update.xml)

Quote
External Tank Cracks Identified, Repair Plans Being Evaluated
Wednesday, November 10, 2010 3:13 PM

This morning during removal of external fuel tank foam insulation, which cracked during draining operations following the shuttle Discovery’s launch scrub on Nov. 5., technicians identified two cracks on a section of the tank’s metal exterior. They were found on the stringer, which is the composite aluminum ring located on the top of the tank’s intertank area. The cracks are approximately 9 inches long. Engineers are reviewing images of the cracks to determine the best possible repair method, which would be done at Launch Pad 39A.

Crews have repaired similar cracks during external tank production by removing the cracked aluminum and replacing it with a “doubler,” which is a twice-as-thick stringer section before replacing the foam insulation. 

Exact schedules and repair options still are being evaluated.


Thanks. Sounds a bit more promising

(hoping for STS-134 to launch in the pre-planned timeframe) ;)

Offline AndrewSTS

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #78 on: 11/10/2010 07:53 pm »
This is troubling.  I don't recall ever having a problem with the metal.  A crack in the foam is relatively easy to understand and repair - relatively - but a crack in the metal structure of a stringer is going to take a significantly more difficult analysis.  Not only does this most likely have to be repaired - and that could be difficult - but understanding the root cause of the problem and developing flight rationale are going to be very difficult.  I am thinking that a launch this calendar year is in jeopardy.  Good luck to the team, if anybody can solve it the folks at MAF, MSFC, and the other centers can do it.  I hope I am being overly pessimistic and this turns out to be simple; but right now it doesn't look like it.

Thanks for posting Mr Hale!

Offline Sarah

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Re: STS-133: Troubleshooting and Pad Flow Latest/Updates
« Reply #79 on: 11/10/2010 08:14 pm »
Update posted on NASA.gov a few minutes ago:
http://www.nasa.gov/shuttle

(or http://www.nasa.gov/rss/133_update.xml)

Quote
External Tank Cracks Identified, Repair Plans Being Evaluated
Wednesday, November 10, 2010 3:13 PM

This morning during removal of external fuel tank foam insulation, which cracked during draining operations following the shuttle Discovery’s launch scrub on Nov. 5., technicians identified two cracks on a section of the tank’s metal exterior. They were found on the stringer, which is the composite aluminum ring located on the top of the tank’s intertank area. The cracks are approximately 9 inches long. Engineers are reviewing images of the cracks to determine the best possible repair method, which would be done at Launch Pad 39A.

Crews have repaired similar cracks during external tank production by removing the cracked aluminum and replacing it with a “doubler,” which is a twice-as-thick stringer section before replacing the foam insulation. 

Exact schedules and repair options still are being evaluated.


So they are saying they will fix it at the pad. Wouldn't that support a launch at the end of the month or would they actually leave Discovery out on the pad for 3 months and work on it.
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