Prediction Method and In-orbit Validation of Flight Temperature of GTO Satellite

To improve the precision of the predicted temperature for GTO satellite,a thermal model is built.The average simulation methods,in the light of GTO specific case,are used to simulate the heat dissipation of the instruments versus the solar array's power supply.In the thermal analysis,the PSCHG function is used to simulate the propellant phase-change heat exchange and the pipes temperature prediction method are applied.The transient temperature of GTO satellite is predicted precisely.Reasult shows that the difference between the predicted results and the telemetered data is within range of 5℃ in more than 79% case.