SCRUB: STS-122 Launch Scrub and ECO Evaluations - Dec 6-7

• #200 by Chris Bergin on 06 Dec, 2007 23:20
• Appears that they are going to rollback the RSS. So that'll rule out a tanking test tomorrow.
• #201 by shuttlefan on 06 Dec, 2007 23:21
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  DaveS - 6/12/2007  6:12 PM
  
  

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  Lee Jay - 7/12/2007  12:58 AM
  
  

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  Chris Bergin - 6/12/2007  4:55 PM
  
  MMT tomorrow to decide on new launch date. NET Saturday, may be later.

  
  If tomorrow is a definite no-go, would they have time to top-off cyro before a hypothetical Saturday attempt?

  Depends on whether they have decided to perform a tanking test or not. They can't perform a tanking test if the RSS is around the vehicle.

  
  Theoretically, couldn't they do what they did with the second STS-114 attempt tomorrow, tank and see how the sensors perform and then if they work, proceed with the rest of the countdown. I remember some folks calling STS-114's second attempt sort of a tanking test embedded into a real launch count.  
• #202 by DaveS on 06 Dec, 2007 23:24
• Quote

  shuttlefan - 7/12/2007  1:21 AM
  Theoretically, couldn't they do what they did with the second STS-114 attempt tomorrow, tank and see how the sensors perform and then if they work, proceed with the rest of the countdown. I remember some folks calling STS-114's second attempt sort of a tanking test embedded into a real launch count.  

  It wasn't a tanking test, it was a real launch countdown from the get go. Embedding a tanking test into the launch countdown was just one of the many ideas thrown around at the time.
• #203 by Felix on 06 Dec, 2007 23:35

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• #204 by Chris Bergin on 06 Dec, 2007 23:40
• I bet these guys will be shattered (loooooong day).
  
  48 hour scrub turnaround confirmed. NET Saturday.
• #205 by psloss on 06 Dec, 2007 23:43
• Leroy Cain now talking about the tanking test option "when they are ready."
• #206 by psloss on 06 Dec, 2007 23:43
• "What we did, fundamentally, was to keep all our options in front of us."  "We need some more time."
• #207 by psloss on 06 Dec, 2007 23:45
• They are keeping the option of flying on Saturday open, too...
• #208 by Chris Bergin on 06 Dec, 2007 23:47
• Quote

  psloss - 7/12/2007  12:43 AM
  
  "What we did, fundamentally, was to keep all our options in front of us."  "We need some more time."

  
  Given what the ET guys were saying earlier, Leroy's made totally the right call.
• #209 by psloss on 06 Dec, 2007 23:48
• Doug Lyons recapping the events of the day; as already noted here, they continued tanking even after the SIM test failure early in fast fill.
• #210 by psloss on 06 Dec, 2007 23:49
• They initially postured for a 24-hour turnaround and are now transitioning into the 48-hour turnaround procedures.  They are intending on topping the LH2 side of PRSD.
• #211 by Ford Mustang on 06 Dec, 2007 23:50
• Just completed pad safing, as Doug Lyons said.
  
  
  40% chance of KSC weather prohibiting launch on Saturday.
• #212 by psloss on 06 Dec, 2007 23:54
• Leroy Cain saying that with the signature seen today, the path between the point sensor box and the MDM has been "exonerated."  Current thinking (as reported) somewhere between the PSB and tank.  Doesn't have the signature of a sensor failure.
• #213 by psloss on 06 Dec, 2007 23:56
• As noted in the opening, they are also looking at operational (in-flight) workaround procedures for dealing with the situation seen today with the new voltage measurements.
  
  The haven't used the voltage measurements during ascent, but have been thinking about it.  Now the flight control team is trying to see if and how they could use that.
  
• #214 by psloss on 07 Dec, 2007 00:01
• They are "taking the next step" in utilizing the weight of the data collected since the STS-114 campaign and the new data.
• #215 by Chris Bergin on 07 Dec, 2007 00:02
• Will be interesting to see if they can go to a LCC of 2/4 ECOs. NASA Safety would need to approve this, I believe?
• #216 by psloss on 07 Dec, 2007 00:07
• Good question from Bill Harwood to Leroy Cain -- in the current plan, they are not going to go into the aft.  However, that is only where they are tonight.
  
  (And "breaking the flight configuration" wouldn't support the option to attempt on Saturday.)
  
• #217 by Chris Bergin on 07 Dec, 2007 00:08
• No plans to go into the aft, yet (of course, if they did it would be a three/four delay, so a NET Saturday meant not going into the aft anyway). Might decide to at tomorrow's MMT.
• #218 by psloss on 07 Dec, 2007 00:10
• There's ex-astro Sam Gemar (w/ HDNet) again...
• #219 by Chris Bergin on 07 Dec, 2007 00:11
• No one's asked about ECO#1 yet.