Two dimensions (2D) C/SiC laminated composites is the material with isotropic\nproperties in laminated sheets, which is considered as a promising\nthermal skin for aircrafts. There are intense thermal flux and thermal impact\nat the local interference region during the flight of the aircrafts. Therefore,\nmastering ablation and mechanical properties of 2D C/SiC laminated composite\nunder extreme environments become the guild lines for the designs of the\nflight corridor and the aircraft security. This paper presents the experimental\nresults of the ablation and thermal impact of C/SiC composites under different\nthermal environments (thermal flux ~5 MW/m2), which were carried out\nwith the equipments of free-jets and conduct pipes. The effects on the ablation\nand mechanical properties of the C/SiC composites are studied, including gas\npressure, thermal temperature, and the rates of temperature increasing and\ndecreasing. The results show that the active oxidation and ablation behaviors\nof 2D C/SiC laminated composites under the thermal flux 5 MW/m2 consist\nwith that of theoretical simulations. The critical failure conditions of 2D\nC/SiC laminated composite is also provided for the enveloping designs of the\nwhole composites lightweight aircrafts.
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