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本文报导了在麦克唐纳·道格拉斯研究试验室(MDRL)的高冲击压力试验设备(HIP)上,以及在空军赖特航空试验室(AFWAL)的再入端头帽试验设备(RENT)上,所得到的再入飞行器(RV)端头帽烧蚀数据间相关关系的一份研究成果。这份研究成果,只限于产生紊流、稳态后退率的环境条件下所试验的特定的碳-碳端头帽材料。所报导的相关公式是根据收集的文献资料和补充试验所得到的56个数据点求得的。研究了诸如模型的尺寸和几何形状,材料的可变参数(化学气相沉积 CVD、体积密度、开孔率、层间距)、设备上喷管的出口直径、马赫数、平均焓值和中心线焓值以及驻点压力等参数的影响。两种电弧加热器使用同一喷管出口直径、模型直径、中心线焓值和模型的驻点压力,所得到的端头帽后退率相关式误差在±7%。
This article reports on the High Impact Pressure Test Equipment (HIP) at the McDonnell Douglas Research Laboratory (MDRL) and on the Reentrance Cap Test Equipment (RENT) at the Air Force Wright Aeronautics Laboratory (AFWAL) A study of the correlation between the obtained ablation data of the reentry vehicle (RV) end caps. The results of this study are limited to the specific carbon-carbon endcap materials tested under ambient conditions that create turbulence, steady-state regression rates. The relevant formulas reported are based on the 56 data points obtained from the literature and supplementary tests collected. Such as the size and geometry of the model, the variable parameters of the material (chemical vapor deposition CVD, bulk density, open porosity, layer spacing), the outlet diameter of the nozzle on the equipment, Mach number, average enthalpy and centerline enthalpy Value and pressure in the stagnation point and other parameters. Both arc heaters use the same nozzle exit diameter, model diameter, centerline enthalpy and stagnation point pressure of the model, resulting in a head end cap receding rate error of within ± 7%.