LIVE: Atlas V - NASA Juno - Launch Day Updates - August 5, 2011

• #240 by just-nick on 05 Aug, 2011 17:12
• Quote from: knotnic on 05 Aug, 2011 17:10

  Quote from: Lars_J on 05 Aug, 2011 17:07

  A Q re: the Centaur... Does the RL-10 not gimble? Why are there so many small thrusters firing?
  

  
  Something about a hydrogen burn-off sequence.
  

  Hydrazine - the monopropellant the centaur RCS uses.  Presumably now that coast and MES-2 are done, they are ditching unneeded propellant to save weight.
  
  I haven't seen this before, is this new?
  
    -N
• #241 by Chris Bergin on 05 Aug, 2011 17:12
• 0.95G acceleration.

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• #242 by Lars_J on 05 Aug, 2011 17:13
• Thanks, ugordan.
  
  Apogee just passed 100000!
• #243 by Chris Bergin on 05 Aug, 2011 17:13
• 120 seconds to MECO-2.
• #244 by ugordan on 05 Aug, 2011 17:14
• Centaur just went >1 on eccentricity.
• #245 by Chris Bergin on 05 Aug, 2011 17:14
• 60 seconds to MECO-2.

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• #246 by Chris Bergin on 05 Aug, 2011 17:15
• MECO-2.
  
  Attitude change to S/C Sep.

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• #247 by Herb Schaltegger on 05 Aug, 2011 17:16
• Quote from: ugordan on 05 Aug, 2011 17:14

  Centaur just went >1 on eccentricity.
  

  
  A really important stat when you want to go BEO . . .
• #248 by Antares on 05 Aug, 2011 17:16
• It looks like OMS assist on STS. Probably has the same effect.
• #249 by Chris Bergin on 05 Aug, 2011 17:17
• It's like a Centaur RPM.

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• #250 by Lars_J on 05 Aug, 2011 17:17
• So they want to to spacecraft separation facing down towards Australia? For better comms?
• #251 by Chris Bergin on 05 Aug, 2011 17:17
• 60 seconds to sep. Spin up next

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• #252 by ugordan on 05 Aug, 2011 17:18
• There was talk of 3 rocketcams onboard and video over Australia if I head correctly. We've so far seen only the cameras on the CCB. Is there really a 3rd camera on the Centaur at all?
• #253 by mikegi on 05 Aug, 2011 17:18
• Is the CGI on NASA TV generated by actual telemetry data or is it simply a scripted animation?
  
• #254 by just-nick on 05 Aug, 2011 17:18
• Quote from: Chris Bergin on 05 Aug, 2011 17:17

  It's like a Centaur RPM.
  

  With all this maneuvering (dancing), I think Centaur is trying to get on DWTS...
• #255 by Chris Bergin on 05 Aug, 2011 17:19
• Spinning!
  
  And S/C Sep! Which they didn't show....
  

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• #256 by Rocket Science on 05 Aug, 2011 17:19
• Congradulations to all the teams!!
• #257 by Herb Schaltegger on 05 Aug, 2011 17:20
• Quote from: mikegi on 05 Aug, 2011 17:18

  Is the CGI on NASA TV generated by actual telemetry data or is it simply a scripted animation?
  
  

  
  Usually live, based on telemetry data.  There's a caption on-screen to the upper right that generally says whether the CGI is live or not.
• #258 by Ronsmytheiii on 05 Aug, 2011 17:20
• 
  
  
• #259 by Chris Bergin on 05 Aug, 2011 17:20
• Congrats to all concerned, ULA, NASA, JPL, etc

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