Mars Swingby operations

1
Mars Swing-by operations
LSWT2

• M. Maibaum DLR/LCC
• FMI, Helsinki 04. Sept. 2006

2
Mars Swing-by General overview

• Mars Swing-by of Rosetta at 25.02.2007
• (CA 25.02.2007-015449)
• Essential trajectory maneuver with high risk
• Orbiter is in eclipse between 015502 and
  021949 (tbc), all experiments (incl. ESS) will
  be switched-off, Orbiter platform is configured
  in reduced power mode, (e.g. Hibernation heaters
  are off)
• Earth occultation between 015300 and 020700
  (tbc)
• Orbiter experiment activities under preparation

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Mars Swing-by Lander participation (Science)

• Romap measurements
• In Slow mode as long as the Lander is powered
• In Fast mode around CA
• Civa-P imaging
• Around CA imaging of Mars (6 images planned)
• After CA imaging of Phobos (1 image planned)
• gt Activities are similar to Earth Swing-by
  operations

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Mars Swing-by Lander participation (Platform)

• Lander powered from Secondary Battery during
• Orbiter eclipse phase (Orbiter-LCL switched-off)
• Required Energy from Battery 47 Wh (around 42
  of
• the current known capacity)
• Data storage inside Lander during link loss (ESS
  off)
• Platform and Romap TM in Lander-MM1
• Civa-SC TM in Rolis-MM
• gt First time during flight to execute
• On-Comet like operations

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Mars Swing-by Additional operations

• Test of MSB activities is planned during PC4
• Topics Power transition phases (LCL SBatt
  LCL)
• Mass memory handling
• No science activities
• Thermal characterisation is planned (30.01.2007)
• Science operations during Mars approach require
  an Orbiter attitude change, new attitude will
  violate thermal constraints (e.g. from Lander),
  characterisation will test the limits and
  possible durations, Lander will be switched-on
  and monitor the activity