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Feasibility and preliminary phases of space projects are aimed to answer to the very fundamental question whether a spacecraft (S/C) exists that can fulfil the mission objectives. In particular the thermal engineers must assess whether a possible configuration is feasible from the thermal point of view, or what modifications could make it suitable. The paper presents the Thermal Concept Design Tool (TCDT), a new software tool under development at Blue Engineering and Alenia Spazio for the European Space Agency (ESA), designed with the objective to assist the thermal engineers in reducing at minimum the effort required by simulation activities and focusing mainly on conceptual activities during feasibility and preliminary studies.

The Automated Transfer Vehicle (ATV) Thermal Control System (TCS) has the task to ensure the required internal environment at level of pressurized module and to thermally control the not pressurised modules and installed equipment, using passive and active control means, in response to the relevant applicable requirements. The ATV vehicle is assially subdivided into three main modules: the Integrated Cargo Carrier (ICC), the Equipped Avionics Bay (EAB) and the Equipped Propulsion Bay (EPB). Each of these modules present elaborated and specific thermal design solutions, to satisfy the different required operative tasks. The extensive thermal analysis campaign performed at ATV vehicle level and in progress for the next Qualification Review (QR) to justify and support the thermal control design solutions and verification status is described.