ALTAN,a New Tool for Spacecraft Thermal Simulation

摘要

ALTAN (ALenia Thermal ANalyser) is a tool developed in Alenia Spazio,for the thermal simulation of satellites.Distinctive features of ALTAN are the description of the system in terms of thermal objects that can be considered as high level primitives,the accurate modelling of the energy sources (planets and sun) and of the optical properties,the integration in a single tool of the steps of radiative,conductive and thermal calculations and of the post-process of the results.An example of ALTAN application is given for Bepi-Colombo mission to Mercury,in particular the modelling of the highly variable planet temperature and the directional optical properties of the planet surface.