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The thermal design of a spacecraft is a time consuming and tedious process. As more graphical tools are becoming available, this process is becoming more efficient, and changes to the thermal design are more quickly implemented. The thermal engineer is required to master several software packages, such as a graphical model builder, thermal radiation and orbital heating program and a thermal analyzer. This paper discusses the THERMICA-SINDA/G software system, where the entire spacecraft thermal design process in integrated in one interactive graphical environment.

This paper discusses the use of graphical modelers for spacecraft thermal design. The advantages and disadvantages of using graphical modelers are presented. Working in the PC environment with low cost PC-based tools is compared to the workstation environment with more expensive workstation workstation-based products. The benefits of using CAD data for thermal models is discussed. Techniques for linking the temperatures from a thermal model to a structural model are presented.