June 22-27, 2014
In the framework of HYDRA, an European funded program, technological solutions of hybrid Thermal Protection System (TPS) are developed. This advanced shielding relies on the hybridization of upper lightweight porous ablative material and inner Ceramic Matrix Composite (CMC) bonded together with a novel high temperature adhesive. The aerial mass optimization of the full TPS requires a controlled reduction in the ablative material thickness to reach high operating temperature configuration of the CMC. Therefore, radiative heat transfer takes place in a thin layer of ablator and becomes a major contributor to the elevation of the interface temperature. In this paper we develop an high fidelity radiative transfer in porous carbon fibers charring and ablative material. Specific elementary characterization, plasma test campaign and numerical simulation are scheduled to feed this radiative heat transfer model.
G. Pinaud, J.M. Bouilly, J. Barcena, S. Florez, B. Perez, W. Fisher, V. Leroy, D. Bernard, T. Massuti, G. Herdrich, C. Zuber, and W. Rotaermel, "HYDRA: Macroscopic modeling of hybrid ablative thermal protection system" in "5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry", Prof. Kambiz Vafai, University of California, Riverside; Prof. Adrian Bejan, Duke University; Prof. Akira Nakayama, Shizuoka University; Prof. Oronzio Manca, Seconda Università degli Studi Napoli Eds, ECI Symposium Series, (2014). http://dc.engconfintl.org/porous_media_V/61