Abstract
In September 2007, a Plasma Wind Tunnel (PWT) Test was performed in the CIRA SCIROCCO facility on the FLPP Snecma Propulsion Solide (SPS) Thermal Protection System (TPS) demonstrator (Barreteau et al., 2008). Aim of the test was to verify, in a space qualifying environment, the behaviour of a large assembly constituted by Ceramic Matrix Composite (CMC) shingles, one curved and two flat panels, the same elements which will be part of the next ESA Intermediate Experimental Vehicle (IXV) thermal protection system. The focus of this chapter is the description of the CFD activities carried out in order to realize and support the plasma wind tunnel test, both in the phase of test definition and for the post test analysis. During the pre-test CFD activity the test condition, previously defined by a simplified two dimensional methodology (Rufolo et al., 2008), has been verified by means of three dimensional simulations, and the final PWT test condition has been defined. Then, the posttest CFD rebuilding activity has allowed the analysis of results and the comparison with experimental measurements. In addition, an assessment of the uncertainty level related to the satisfaction of the test requirements, in terms of heat flux and pressure to be realized over the test article, has been provided by analyzing the sources of error linked to both design and testing phases.
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