Ablation of Galileo Probe heat-shield models in a ballistic range
Ablation of Galileo Probe heat-shield models in a ballistic range
复制标题
伽利略探测器隔热罩模型在弹道范围内的烧蚀
DOI：
--
复制
发表时间：
1985
期刊：
影响因子：
--
通讯作者：
A. Balakrishnan
中科院分区：
文献类型：
--
作者：
C. Park;A. Balakrishnan
用碳-酚材料制成的伽利略探测器的几个1/24比例模型在弹道靶场上飞行，以测试它们的烧蚀特性。分别以氩气和空气为实验气体，模拟木星进入大气层时的加热环境，主要是辐射加热环境和全对流加热环境。实验结果与辐射激波层环境（RASLE）和炭化材料烧蚀（CMA）的理论预测进行了比较。在氩气中获得的实验数据与理论预测大致一致。当考虑湍流和表面粗糙度效应时，空气的数据与理论近似一致。这些数据表明，伽利略探测器的隔热罩设计得很好。
Several 1/24-scale models of the Galileo Probe made of carbon-phenol ic materials were flown in a ballistic range to test their ablation characteristics. Mostly radiative or all-convectiv e heating environments were produced by using argon or air as the test gas, respectively, to simulate the Jovian entry heating environments. The experimental results were compared with the theoretical predictions made using the computer codes of radiating shock layer environment (RASLE) and charring materials ablation (CMA). The experimental data obtained in argon agreed approximately with the theoretical predictions. The data for air agreed approximately with the theory when turbulence and surface roughness effects were accounted for. The data imply that the Galileo Probe heat shield was adequately designed.