Live: STS-117 Flight Day 7 - More retracting, PAO events

• #180 by Skinny on 14 Jun, 2007 21:05

• Quote

  JimO - 14/6/2007 3:57 PM There was supposed to be an emoticon after the 'suck it up' phrase!! Oops! :frown:

   Here you go and I also found it pretty good read, not ringing too much alarm bells right now.

   

   

• #181 by Bret on 14 Jun, 2007 21:10
• Do the engineers think that the challenging retract of the array is purely due to the extended time it has been up there? Or did the manufacturers grossly underestimate the ease with which this could be accomplished? Not trying to be critical -- just wondering how much of this effort was anticipated way back when.
• #182 by Jackson on 14 Jun, 2007 21:11
• So why is Gerst saying it's not a problem?
• #183 by jmjawors on 14 Jun, 2007 21:11
• They anticipated the array to retract without issue (and they acted on that premise during STS 116).  I think they just underestimated the difficulty.
• #184 by ETEE on 14 Jun, 2007 21:25
• When designing the solar arrays, the manufacturers did not take into account the effects of zero gravity on the guide wires, grommets and concertina folds.  They were expecting some change in the stiffness of the wing material.  I expect they would use a different design if they were to repeat the exercise today.
  
  ps Appreciate the Ku status info.
• #185 by Chris Bergin on 14 Jun, 2007 21:30
• For those following STS-117 on L2 through the MMT level. 35 presentations on everything going on overnight and today are now uploaded.
• #186 by Bret on 14 Jun, 2007 21:40
• Well, that's the bright side to this exercise, then.  Really great learnings for the engineers to incorporate into the next version.  What are they considering to power the eventual moon base? Solar, fuel cell, nuclear? Or a combination?
  
  Edit: Sorry, off topic -- doesn't belong in this thread.  I am still learning the rules here!
• #187 by rcaron on 14 Jun, 2007 21:45
• Solar, maybe a nuclear reactor down the road.
  
  It is challenge to setup a collapsible array structure that can operate in 1/6th gravity. Hopes to retrofit an ISS design are looking increasingly unlikely as you work the structural numbers (and the difficulties we've been seeing on the last couple missions)
• #188 by jarthur on 14 Jun, 2007 22:14
• I have been away for the last couple hours so I haven't been getting the updates. What's the status on the briefing? Isn't supposed to be now?
• #189 by Johnny Rönnberg on 14 Jun, 2007 22:16
• Quote

  jarthur - 14/6/2007  12:14 AM
  
  I have been away for the last couple hours so I haven't been getting the updates. What's the status on the briefing? Isn't supposed to be now?

  
  NET 6:30 PM EDT (00:30 CEDT)
• #190 by zinfab on 14 Jun, 2007 22:22
• MMT briefing now sched for 6:45pm EDT
• #191 by jmjawors on 14 Jun, 2007 22:23
• Quote

  Johnny Rönnberg - 14/6/2007  5:16 PM
  
  NET 6:30 PM EDT (00:30 CEDT)

  
  Now delayed another 15 minutes.
• #192 by kneecaps on 14 Jun, 2007 22:23
• I hope the crew are finding a moment to take some filim of the blanket repair tools and their practice session. Great for the highlights!
• #193 by Zachstar on 14 Jun, 2007 22:26
• Update coming on the SM computers!
• #194 by DaveS on 14 Jun, 2007 22:26
• Update on the SM computers coming through the ISS CapCom.
• #195 by Gary on 14 Jun, 2007 22:26
• Just had a thought - If the new solar array is guilty of crashing the russian computer systems could it have had the same effect on the shuttle computers if Atlantis had SSPTS fitted?
  
• #196 by Johnny Rönnberg on 14 Jun, 2007 22:29
• Quote

  jmjawors - 15/6/2007  12:23 AM
  
  

  Quote

  Johnny Rönnberg - 14/6/2007  5:16 PM
  
  NET 6:30 PM EDT (00:30 CEDT)

  
  Now delayed another 15 minutes.

  
  Why, NASA Why?  :angry: I have a job to go to in five and a half hour.
• #197 by Zachstar on 14 Jun, 2007 22:30
• They are troubleshooting the Russian computers.
  
  The computer's power source is extremely sensitive to noise.
  
  The new truss element may have provided noise. Possibly when it was grounded. The times match up.
  
  They plan to send a plan up for the crew to use a scopemeter to check for noise in the power.
  
  They will need to access aft end cones to check.
  
  The station is still sensitive to stuff that can affect CMGs.
  
  Clear out some stuff in the node.
  
  Check the batteries later.
  
  ---------
  
  The check will happen sometime today.

  ---

  
• #198 by zinfab on 14 Jun, 2007 22:31
• they suggest that there is noise in the lines running from the arrays to the power supply of the computers. they state that the power supply is susceptible to "noise" and that while no power was running at the time of failure, they had just finished "attach." They hypothesize that the lines created a conduit for "noise."
  
  *zach's summary more clear, i think*
• #199 by triddirt on 14 Jun, 2007 22:31
• OK... I'm confused...
  Doesn't this information that the computers have been offline during the day conflict with the information provided at the press conference earlier with Gerst