The Spacecraft Aerothermal Model is a destructive re-entry code developed in conjunction with Fluid Gravity Engineering, in response to a European Space Agency GSP project. SAM is an engineering re-entry tool, with improved aerothermal models, designed for use in ESA's Concurrent Design Facility (CDF). As such, SAM delivers improved modelling of demise phenomena, whilst maintaining the short execution times required by the iterative design methodology used within the CDF. Belstead Research contributed the ATS3, VFM and enhanced AHM modules to SAM. SAM is currently in use at ESA-ESTEC, and is licensed to Oxford University.