This paper discusses the development of an inhouse computer code for the thermal analysis of satellites. The code uses Thermal Network Method (TNM) in conjunction with the Method of Lines (MOL) for the solution of the energy equation in the presence of radiative heat transfer. The predictive accuracy of the code is demonstrated on a test problem involving a cubic satellite with two solar panels and a single representative payload at its center to account for all other possible equipments in the satellite. The results produced by the present code were compared with the predictions of commercial thermal analysis software on the same test problem and a good agreement between the two sets of results was obtained. The code is a promising tool for the thermal analysis of satellites.
At the beginning of 21st century, it is seen a security are only the most obvious space technologies that discernible increase in Space expenditure in all over the humanity relies on. world especially in US,
In this paper, the development of an in-house computer code for the thermal analysis of satellites is discussed. The code is based on Thermal Network Method (TNM) in conjunction with Method of Lines (MOL) for the solution of energy equation. The view factors required for the computation of radiative exchange factors which are used in TNM are calculated by a newly developed module based on Monte-Carlo Ray Tracing Technique. The predictive accuracy of the code including the new module was assessed on a realistic test problem involving a satellite orbiting the earth at an altitude of 700 km. Comparison of transient results obtained by the in-house code and a commercial thermal analysis software package (Thermica-SINDA/G) has shown that the in-house code predictions mimic the ones obtained by Thermica-SINDA/G very accurately.
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