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#400
by
shuttlefan
on 09 Apr, 2007 14:56
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Thanks for giving me the heads-up on the ET offload.
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#401
by
C5C6
on 09 Apr, 2007 20:23
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Chris Bergin - 8/4/2007 7:12 PM
Preps for engine removal begin Monday
engine removal? SSME? why???
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#402
by
nathan.moeller
on 09 Apr, 2007 20:38
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C5C6 - 9/4/2007 3:23 PM
Chris Bergin - 8/4/2007 7:12 PM
Preps for engine removal begin Monday
engine removal? SSME? why???
Earlier story from last week. They found a bit of contamination in an engine on one of the other birds so they decided to pull out Atlantis' engines to make sure all is well.
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#403
by
mkirk
on 09 Apr, 2007 20:39
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C5C6 - 9/4/2007 3:23 PM
Chris Bergin - 8/4/2007 7:12 PM
Preps for engine removal begin Monday
engine removal? SSME? why???
Contamination was found from an RTV like material called Repliset was found in a feedline on Discovery and also on two engines that flew on Discovery, the plan is to check Atlantis' engines to ensure no contamination. Also there is the possibility they may replace a LPOTP (low pressure oxidizer turbo pump) because of an issue found at Stennis last week.
Mark Kirkman
P.S.
Sorry I did not see the previous reply until now.
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#404
by
shuttlefan
on 09 Apr, 2007 20:41
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mkirk - 9/4/2007 3:39 PM
C5C6 - 9/4/2007 3:23 PM
Chris Bergin - 8/4/2007 7:12 PM
Preps for engine removal begin Monday
engine removal? SSME? why???
Contamination was from an RTV like material called Repliset was found in a feedline on Discovery and also on two engines that flew on Discovery, the plan is to check Atlantis' engines to ensure no contamination. Also there is the possibility they may replace a LPOTP (low pressure oxidizer turbo pump) because of an issue found at Stennis last week.
Mark Kirkman
Anyone know when actual engine removal begins?
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#405
by
mkirk
on 09 Apr, 2007 20:47
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shuttlefan - 9/4/2007 3:41 PM
Anyone know when actual engine removal begins?
Originally they were originally aiming for Thursday-Friday, but it looks like physical removal of the engines will be next week now. One of the big objectives is to ensure the engine work has minimal impact on tank repair effort.
Mark Kirkman
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#406
by
shuttlefan
on 09 Apr, 2007 22:07
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mkirk - 9/4/2007 3:47 PM
shuttlefan - 9/4/2007 3:41 PM
Anyone know when actual engine removal begins?
Originally they were originally aiming for Thursday-Friday, but it looks like physical removal of the engines will be next week now. One of the big objectives is to ensure the engine work has minimal impact on tank repair effort.
Mark Kirkman
Thanks Mark!! They're probably removing the heatshields surrounding the engines.
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#407
by
gordo
on 09 Apr, 2007 23:21
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wonder if they want to wait till swap/no swap call on tank is made. must be easier and less risk to remove the engined horizontally
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#408
by
Jim
on 09 Apr, 2007 23:33
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gordo - 9/4/2007 7:21 PM
must be easier and less risk to remove the engined horizontally
Not really
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#409
by
Chris Bergin
on 10 Apr, 2007 02:11
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STS 117 / OV 104 / VAB HB1
ET engineering dispositions assessments complete
ET LO2 tank PDL repairs in work
Orbiter ECO sensor wire separation in work Continuity checks
SSME removal preps in work
ET sep camera removal complete
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#410
by
nathan.moeller
on 10 Apr, 2007 12:50
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gordo - 9/4/2007 6:21 PM
wonder if they want to wait till swap/no swap call on tank is made. must be easier and less risk to remove the engined horizontally
They can do it both horizontally and vertically. They've performed engine removal operations in the OPF, VAB and at the pad many times before. I believe Columbia had an engine R&R'd in the VAB before rolling out for STS-107. As Jim mentioned, I don't think there is much difference in the levels of difficulty and risk.
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#411
by
on 10 Apr, 2007 13:24
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Could they roll her out to the pad and then remove the engines?
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#412
by
DaveS
on 10 Apr, 2007 13:27
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Justin Wheat - 10/4/2007 3:24 PM
Could they roll her out to the pad and then remove the engines?
Yes. SSME R&R can be done at any time in a flow.
nathan.moeller - 10/4/2007 2:50 PM
I believe Columbia had an engine R&R'd in the VAB before rolling out for STS-107.
No SSME R&R was done during the STS-107 VAB flow.
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#413
by
shuttlefan
on 10 Apr, 2007 13:33
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Justin Wheat - 10/4/2007 8:24 AM
Could they roll her out to the pad and then remove the engines?
Yes. They've R&R'd engines on the pad before. Here's a brief (hopefully brief!!) chronology:
STS-6Challenger-Launched April 1983:Engines replaced due to LH2 leaks.
41-DDiscovery-Launched Aug.1984:1 engine replaced on pad after FRF.
STS-49Endeavour-Launched May 1992:All three engines replaced after FRF
STS-55Columbia-Pad Abort on March22nd1993:All three engines replaced
STS-51Discovery-Pad Abort on Aug12th1993:All three engines replaced
STS-52Columbia-LaunchedOct.1992:One engine replaced(weld concerns)
If I missed any, someone please correct me. I had missed STS-52 earlier. :cool:
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#414
by
on 10 Apr, 2007 13:48
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Any updates with the decision to proceed with the flow or wait till June?
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#415
by
DaveS
on 10 Apr, 2007 14:03
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Justin Wheat - 10/4/2007 3:48 PM
Any updates with the decision to proceed with the flow or wait till June?
Not yet. The review isn't scheduled to begin until 3 pm EDT.
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#416
by
nathan.moeller
on 10 Apr, 2007 19:06
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DaveS - 10/4/2007 8:27 AM
nathan.moeller - 10/4/2007 2:50 PM
I believe Columbia had an engine R&R'd in the VAB before rolling out for STS-107.
No SSME R&R was done during the STS-107 VAB flow.
Yeah I didn't remember for sure. I looked it up and read that Engine 2 on Columbia was removed for inspection while she was in the OPF. However, I do remember seeing images of an orbiter undergoing main engine R&R while in the VAB. For some reason my brain tied the two together. If anyone knows which orbiter and mission that might have been I'd like to know (use PM).
EDIT: It was Atlantis as she prepared for STS-101. Found the images just now on the KSC website.
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#417
by
ShuttleDiscovery
on 10 Apr, 2007 19:06
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Check this new ISS-13A patch out! I found it on SPACEFACTS.DE whilst browsing
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#418
by
astrobrian
on 10 Apr, 2007 19:27
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Ok, I like that, but it is not a replacement to the mission patch right? So what would that be for?
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#419
by
nathan.moeller
on 10 Apr, 2007 20:40
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astrobrian - 10/4/2007 2:27 PM
Ok, I like that, but it is not a replacement to the mission patch right? So what would that be for?
Not a replacement patch. Just something symbolizing the mission itself.
