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Preliminary Satellite in flight status

Preliminary Satellite in flight status. Satellite activities. Satellite main activities performed since separation First acquisition in stowed configuration Deployment of the PLM and 2nd SHM in deployed configuration NOM/NOM acquisition Gyro and thrusters calibration

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Preliminary Satellite in flight status

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  1. Preliminary Satellite in flight status

  2. Satellite activities • Satellite main activities performed since separation • First acquisition in stowed configuration • Deployment of the PLM and 2nd SHM in deployed configuration • NOM/NOM acquisition • Gyro and thrusters calibration • OCM in plane and out of plane • Switch on of redundant equipment ( GYRO3, STR2) • inertial and zenith ECM

  3. Preliminary Functional chain status • Elctrical • Power consumption as expected including PLM (actual comparison to be performed on 21/12 for PLM heater ( worst case of eclipse)) • Eclipse and shadowing as expected • Battery management OK ; optimisation of internal resistance to be evaluated and tested before end of the year • Thermal • PF CTA behaves as expected and temperature are well controlled • Coupling between S/A and PLM arms under analysis • In SHM configuration high temperature noticed on S/A due to probable specular reflexion on PLM arms • In NOM configuration, low impact for all the SADM position • Modelisation on going in TAS

  4. Preliminary Functional chain status • AOCS • Nominal behaviour • Equipment status : nominal including redundant equipment • Command/ control • Nominal • Use of memory read between two addresses to recover TM • R/F • Occultation of S-Band signal by PLM as expected

  5. Satellite Ground monitoring • On ground monitoring • Update of the SMOS ground monitoring – very few modifications • Yellow and red alarms threshold for PLM temperature, current, SL consumption • Update of the documentation on expected alarms • New SDB to be released by end of CW50 • Monthly report • Number of cycling of IHTSN/IHTSR added

  6. Conclusion • The satellite behaves as expected, no anomaly noticed so far • Complete presentation of in flight assessment on 14 January in Thales premises

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