Speaker
Description
The Particle Environment Package onboard the JUICE mission is designed to measure neutral and charged particles in the Jupiter system. Being a particle spectrometer, its temperature should be higher than the JUICE spacecraft to minimize contamination by outgassing.
Therefore, several back-out periods with nominal and redundant instrument heater turned on are foreseen during the 8 year long transfer to Jupiter. The upcoming hot mission phase during Venus FlyBy in 2025 is of particular interest for reaching maximum temperatures.
To increase confidence in thermal analysis predictions, the bake out phases so far were recreated by importing telemetry data of heater status and instrument dissipation into the thermal model.
A brief overview of the PEP NU thermal design is given, followed by its thermal history in space so far. The challenges in obtaining the correct telemetry data and strategies to cope with missing current/ temperature reading calibrations are presented.
