Magion-4 Satellite Thermal Status -2 Years Flight Operation 981643

Description of design principles of thermocontrol system for small subsatellites Magion- 4, 5 and thermal behavior during two years of flight exploitation are presented. Passive type of thermocontrol system is intended to support the temperature level (-10…50) °C in inner volume of equipment compartment at solar subsatellite orientation and in temporary Earth shadow. Heat energy balance of the object at required temperature range is provided by utilization of radiating surfaces with defined areas, by thermal coupling of hot and cold subsatellite parts and by adaptation of constructive subsatellite elements to solve thermal tasks. Survey of telemetric date concerns temperature state of the main major parts of satellite are under consideration as well.


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