Research and development on high performance methods for ensuring thermal regimes of NTUU "KPI" nanosatellite

For the first time in Ukraine team of students and teachers has developed experimental flight model of nanosatellite and structural - technological methods for ensuring of thermal conditions of all nanosatellite subsystems. Namely, onboard the data processing subsystem with the help of onboard computer and software applications, three axes attitude determination and control subsystem with sun sensors, radio frequency link telecommunication subsystem, telemetry tracking and control subsystem, electric power supply subsystem.
Novel model for thermal regimes was proposed and new experimental data on thermal performances of the major satellite subsystems have been obtained. Test methods and procedure on the main space environmental factors affects to the satellite have been developed with the account of the satellite orbital attitude and position.

Autonomous ground tests on the flight model inside the thermal chamber for outer space environment simulation have been carried out. Software for general nanosatellite control has been developed, ground station for students satellites tracking and control has been created.

Draft design documentation was issued for the flight model of the students nanosatellite with the following features and performances: 100х100х130 mm - overall dimensions, 1.5 kg mass, not more than 1.5 watts power consumption. Electric power supply is provided by means of four accumulator batteries and five solar cells. Data processing subsystem is placed at the module of on-board computer where CPU of Cortex architecture is applied. GLONASS / GPS system with two microwave antennas for navigation signals generation and transceiver with 435 MHz down link and 144 MHz uplink frequencies for nanosatellite tracking and telecommunication are used.