The aeroheating ablation and erosion experiment of composite materials in arc-heater was introduced in
this paper. By means of improving arc heating test facility and dust-injection system, a prescribed amount of graphite dust particles were injected into the high pressure arc-heater plenum, where these particks were mixed with the high temperature heater air and then drag accelerated through the heater supersonic nozzle to impact the heated nosetip test particles. The measurement and calculation methods of flow field parameters were established at the same time. And then, this paper briefly describes the particle erosion performance of C/ C and WC-C/C thermal shield composite materials. The results show that
the flow field with particles can satisfy the needs of ablation and erosion experiment because of its excellent performance,and the erosion performance of WC-C/ C is better than that of C/C on arc heating conditions.