Reentry simulation on CMC materials

TL;DRAbstract

One of the main topics of investigating reentry bodies is the evaluation of heat protection systems, especially the choice and development of proper materials. The reentry process takes place in hypervelocity flow fields of thermodynamic nonequilibrium which are connected with complex interaction between chemical processes in the high temperature air and others at the surface of the heat protection material. The arc-heated wind tunnel LBK of DLR is one of the few existing high energy facilities for testing thermal protection materials with realistic gas surface interactions over times sufficient for stationary test conditions. Tests with samples arranged in the stagnation area of models give the possibility to consider the reaction of the thermal protection material dependent on the enthalpy, the surface pressure and the nonequilibrium conditions of the flow field. The reaction is identified by measuring the surface temperature, the mass loss rate and the change of the material thickne

Chat with Paper

AI Agents for this Paper