3) Dutch Space, Mendelweg 30, 2333 CS Leiden, The Netherlands,+31(0)715245222, J.Fatemi@dutchspace.nl (4) AOES, De Huygensstraat 34,2201 DK Noordwijk, The Netherlands,+31(0)715653733, Francesca. ABSTRACT The European EXPErimental Re-entry Test-bed (EXPERT) is developed by the European Space Agency and the Prime contractor Thales Alenia Space Italy. The aim of EXPERT is to improve the understanding of aerothermodynamic phenomena associated with hypersonic flight.