Author Topic: SCRUB: STS-134 - LAUNCH DAY UPDATES - April 29, 2011  (Read 148518 times)

Offline Orbiter

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Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #20 on: 04/29/2011 11:00 AM »
PAO saying no problems are in work.

Orbiter
Attended space missions: STS-114, STS-124, STS-128, STS-135, Atlas V "Curiosity", Delta IV Heavy NROL-15, Atlas V MUOS-2, Delta IV Heavy NROL-37, Falcon 9 CRS-9, Falcon 9 JCSAT-16, Atlas V GOES-R, Falcon 9 SES-11, Falcon Heavy Demo.

Online Chris Bergin

Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #21 on: 04/29/2011 11:10 AM »
PAO saying no problems are in work.

Orbiter
Took them something like 30 minutes to acknowledge the GUCP leak last time.

Has to be pretty serious for them to mention it, and then it won't be immediate on their side. Just the nature of how PAO works. Kinda understandable. Half the reason they say they are not working any issues that "would prevent us from launching".
« Last Edit: 04/29/2011 11:11 AM by Chris Bergin »

Offline Scotty

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Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #22 on: 04/29/2011 11:18 AM »
klausd

That "smoke" is cold oxygen vapor from the LOX dump pond.
Totally normal.

Online Chris Bergin

Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #23 on: 04/29/2011 11:19 AM »
From L2: LCC violation with a pressure problem in the Right OMS fuel tank now classed as IPR-53 (correction, from previous 54). May send engineers to pad.
« Last Edit: 04/29/2011 11:31 AM by Chris Bergin »

Offline Ford Mustang

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Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #24 on: 04/29/2011 11:23 AM »
Can see GOX venting out from the MPS.  HD feed went down, so no screen shots right now..

Also, having to run out for a few hours -- not a whole lot going on besides tanking.  Should be back for coverage around 10am or earlier.  Will delete this note later today.

Offline Orbiter

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Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #25 on: 04/29/2011 11:23 AM »
From L2: LCC violation with a pressure problem in the Right OMS fuel tank now classed as IPR-54. May send engineers to pad.

Would this be classed as a 'serious' issue or more of something that they would just like to have fixed by T-9 minutes?

Orbiter
Attended space missions: STS-114, STS-124, STS-128, STS-135, Atlas V "Curiosity", Delta IV Heavy NROL-15, Atlas V MUOS-2, Delta IV Heavy NROL-37, Falcon 9 CRS-9, Falcon 9 JCSAT-16, Atlas V GOES-R, Falcon 9 SES-11, Falcon Heavy Demo.

Offline Ford Mustang

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Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #26 on: 04/29/2011 11:26 AM »
From L2: LCC violation with a pressure problem in the Right OMS fuel tank now classed as IPR-54. May send engineers to pad.

Would this be classed as a 'serious' issue or more of something that they would just like to have fixed by T-9 minutes?

Orbiter

LCC violation mean if it isn't fixed, we don't launch.  You can't launch out side of the Launch Commit Criteria.  They're still tanking, so it isn't a show stopper quite yet.  I'm sure they'll look into it. 

From the LCC rule set on L2, this is a constraint to coming out of the T-9 hour hold.
« Last Edit: 04/29/2011 11:29 AM by Ford Mustang »

Online Chris Bergin

Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #27 on: 04/29/2011 11:31 AM »
Correction, this is IPR-53, not 54 (there isn't a 54).

Online Chris Bergin

Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #28 on: 04/29/2011 11:38 AM »
Any updates and we'll note them. No need to ask.

Online Chris Bergin

Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #29 on: 04/29/2011 11:51 AM »
They are now meeting about IPR-53 (OMS).

Another issue is an observation of a LOX leak seen on an OTV camera. In work.

Offline marshallsplace

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Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #30 on: 04/29/2011 11:54 AM »
Great shots:
« Last Edit: 04/29/2011 11:56 AM by marshallsplace »

Online Chris Bergin

Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #31 on: 04/29/2011 12:03 PM »
Looking at seeing if they can work a LCC waiver for the OMS issue (IPR-53) - which would be good news.

Offline trebloc

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Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #32 on: 04/29/2011 12:07 PM »
Looking at seeing if they can work a LCC waiver for the OMS issue (IPR-53) - which would be good news.

Hope so! Should get a great view of Endeavour and tank passing over the south of Ireland this evening if all goes as planned.
A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism.
Carl Sagan,

Offline Ronsmytheiii

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Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #33 on: 04/29/2011 12:10 PM »
Still have to love the logo on the tank
« Last Edit: 04/29/2011 12:13 PM by Ronsmytheiii »
"Every vision is a joke until the first man accomplishes it; once realized, it becomes commonplace." - Robert Goddard

Offline D.A.

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Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #34 on: 04/29/2011 12:11 PM »
STS-131 had a RCS leak on the right OMS pod, any connection between that issue and the pressure problem today?

Offline Ronsmytheiii

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Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #35 on: 04/29/2011 12:13 PM »
"Every vision is a joke until the first man accomplishes it; once realized, it becomes commonplace." - Robert Goddard

Offline Ronsmytheiii

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Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #36 on: 04/29/2011 12:14 PM »
"Every vision is a joke until the first man accomplishes it; once realized, it becomes commonplace." - Robert Goddard

Online Chris Bergin

Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #37 on: 04/29/2011 12:17 PM »
IPR-53: Current forward plan is to interconnect the two OMS tanks (crossfeed) and try and equalize the pressure.

Online Chris Bergin

Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #38 on: 04/29/2011 12:21 PM »
STS-131 had a RCS leak on the right OMS pod, any connection between that issue and the pressure problem today?

Indeed. We wrote a lot on that.
http://www.nasaspaceflight.com/2010/03/sts-131-prcb-rrcs-notes-split-opinion-flight-rationale/

Really don't think this is related.

Offline Ronsmytheiii

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Re: LIVE: STS-134 - LAUNCH DAY UPDATES - April 29, 2011
« Reply #39 on: 04/29/2011 12:23 PM »
Our old friend, the GUCP
"Every vision is a joke until the first man accomplishes it; once realized, it becomes commonplace." - Robert Goddard

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