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The variety of thermal design and analysis software tools available on the international market is wide, with a number of different ‘standards’ for the space industry. The major tools include the ubiquitous SINDA in its many forms, TRASYS, ESATAN, ESARAD, THERMICA, Thermal Desktop, IDEAS-TMG, and the list goes on. Within this landscape, there is very little compatibility from one tool to another, and few translators to allow seamless transfer from one tool to another. To add to this complexity, equipment subcontractors whose main business is not within the space industry tend to use non-specialist software for their thermal analysis, often doubling up with their structural analysis tools such as Nastran, Ansys, etc. As a spacecraft systems thermal engineer, this wide variety of tools and model formats can lead to significant time spent translating and coordinating delivered thermal mathematical models to create the overall system level model.