Dust Particle Erosion during Mars Entry. Issue1
Dust Particle Erosion during Mars Entry. Issue1
复制标题
进入火星期间的尘埃粒子侵蚀。
DOI：
10.2514/6.2010-6283
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
M. Desjean
中科院分区：
文献类型：
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作者：
K. Keller;P. Lindenmaier;E. Pfeiffer;B. Esser;A. Gülhan;L. Marraffa;P. Omaly;M. Desjean
Norcoat Liege烧蚀器是计划于2016年登陆火星的欧洲探测器EXOMARS的隔热材料。在火星的某些年里，由于未知的原因，局部沙尘暴可能在短短几天内就发展成环绕全球的风暴。因此，任何直接从双曲轨道进入的探测器都必须应对在尘土飞扬的大气层中飞行的风险。沙尘层可以延伸到地表以上80公里处。在ESTEC和CNES签订的两项研究框架内，对2005 - 2008年Norcoat Liege的颗粒侵蚀进行了研究。当时已经进行了系统的电弧喷射测试计划，目前在2010年春季之间进行了额外的测试活动，再次与CNES签订了合同。本文将总结以往的工作，提出新的研究结果，并评估对隔热板设计的估计影响。
The ablator Norcoat Liege is baselined as thermal protection material for the European probe EXOMARS planned to land on Mars in 2016. During some Martian years, for unknown reasons, local dust storms may grow to global encircling storms in only a few days. Accordingly, any probe entering directly from a hyperbolic approach has to cope with the risk of flying in a severely dust loaded atmosphere. The dust layer may extend up to 80 km above the terrain. In the frame of two studies in contract by ESTEC and CNES, particle erosion of Norcoat Liege has been investigated in the years 2005 – 2008. A systematic arc-jet test program has been performed that time, which is currently substantiated by an additional test campaign between in spring 2010, again in contract to CNES. In this paper a summary of the previous activities will be given, the results of the new investigations presented and the estimated influence on heat shield design assessed.