LIVE: TianGong-1 JSLC CZ-2F (T1) launch September 29, 2011, and future events

• #980 by lamid on 02 Apr, 2018 04:31
• for comparison deorbit of Mir
  
• #981 by lamid on 02 Apr, 2018 07:07
• Last moments Tiangong-1
  

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• #982 by Cristiano on 02 Apr, 2018 12:17
• Your trajectory seems unrealistically smooth.
  Here’s a bit more realistic trajectories obtained from the last 5 TLEs:
  
  
  [original size]
  
  and a detailed view:
  
  
  [original size]
  
  I skipped both the TLE 18091.67159150 and 18091.67159262 because the last TLE (18091.67159643) seems their corrected version.
• #983 by lamid on 02 Apr, 2018 14:57
• Quote from: Cristiano on 02 Apr, 2018 12:17

  Your trajectory seems unrealistically smooth.

  
  i use a very simple model in excel,
  I like to see the last minutes and the transition from 100 to 50 km, possibly up to 0,
  I'm happy for every post
• #984 by lamid on 02 Apr, 2018 15:52
• My and Your model.
  It is correct?
  
  It's an estimate of how long the station breaks down.
  

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• #985 by Cristiano on 02 Apr, 2018 16:16
• The excel file with all the data:
  http://cristianopi.altervista.org/Tiangong/UltimaOrbita.xlsx
• #986 by lamid on 02 Apr, 2018 17:23
• simulation last moments Tiangong-1 Cristiano and Lamid

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• #987 by lamid on 03 Apr, 2018 22:02
• Quote

  Re-Entry, referencing the spacecraft crossing 80 Kilometers in altitude, occurred over the South Pacific Ocean at approximately 13.6°S 195.7°E, around 780 Kilometers due East of American Samoa.

  http://spaceflight101.com/abandoned-chinese-space-laboratory-re-enters-harmlessly-over-pacific-ocean/
• #988 by lamid on 12 Apr, 2018 14:58
• I tried Gmat
  Tiangong-1 last orbits and decay in 80 km altitude
  last minutes and disintegration 90-60 km

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• #989 by Cristiano on 12 Apr, 2018 16:39
• It seems that Gmat gives a much longer time for 90-60 km drop.
  Please, could you upload the Gmat file? I would try it out.
• #990 by lamid on 13 Apr, 2018 07:28
• txt file from Gmat

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  GmatTiangong1.txt
• #991 by lamid on 13 Apr, 2018 08:02
• Julian Danzer Orbiter simulation
  
  video time 7:47, 7:55
  altitude 90.50 km simulation time 36228
  altitude 62.92 km simulation time 36502
  r 6434 km km simulation time 36515 sec
  90,50-60 km 287 sec

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• #992 by Cristiano on 13 Apr, 2018 09:11
• Quote from: lamid on 13 Apr, 2018 07:28

  txt file from Gmat
  

  
  I meant the file to set up the simulation, not the result file.
• #993 by lamid on 13 Apr, 2018 09:43
• last moments according to Gmat
  from 00:00-00:22, 120 km to 10 km

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