Spacecraft Thermal Info:

  • On the ground, limits can be set for any mnemonic: RL (red low), YL (yellow low), YH (yellow high), RH (red high). Also, delta limits can be defined - they flag when a change is bigger than an allowed delta.

  • Instrument mnemonics usually begin with the first letter of the instrument, for example: MIPWA = MDI current.

  • On the spacecraft, thermal mnemonics are automatically monitored if the function is enabled, and action is taken if needed. Monitoring of individual mnemonics can be disabled.

  • Each spacecraft temperature mnemonic has a T1, T2, T3, T4.

  • T1 & T2 -> keeps the temperature between these 2 numbers if temperature is themostatically controlled - NOT used for most mnemonics

  • T3 & T4 -> if temperature goes outside of these, corrective action is taken

  • For information about thermal reconfigurations, see /u/ecs/soc/info/rtu_reconfig.txt

  • T1 & T2 values are inside T3 & T4 values. Ground red limits are also inside the T3 & T4 values.

  • Each QT and TT has a defined T1, T2, T3, T4.
  • Location: /u/ecs/soc/info/thermal_info.html