热电偶
火星探测计划
大气进入
火星表面
蒙特卡罗方法
隔热板
火星登陆
灵敏度(控制系统)
航空航天工程
环境科学
反向
温度测量
火星探测
材料科学
火星人
工程类
物理
天体生物学
热力学
复合材料
数学
几何学
统计
电子工程
作者
Milad Mahzari,Robert D. Braun,Todd R. White,Deepak Bose
出处
期刊:Journal of Spacecraft and Rockets
[American Institute of Aeronautics and Astronautics]
日期:2015-05-20
卷期号:52 (4): 1203-1216
被引量:39
摘要
The Mars Science Laboratory entry vehicle successfully landed the Curiosity rover on the Martian surface on 5 August 2012. A phenolic impregnated carbon ablator heatshield was used to protect the spacecraft against the severe aeroheating environments of atmospheric entry. This heatshield was instrumented with a comprehensive set of pressure and temperature sensors. The objective of this paper is to perform an inverse estimation of the entry vehicle's surface heating and heatshield material properties. The surface heating is estimated using the flight temperature data from the shallowest thermocouple. The sensitivity of the estimated surface heating profile to estimation tuning parameters, measurement errors, recession uncertainty, and material property uncertainty is investigated. A Monte Carlo analysis is conducted to quantify the uncertainty bounds associated with the nominal estimated surface heating. Additionally, a thermocouple driver approach is employed to estimate heatshield material properties using the flight data from the deeper thermocouples while applying the shallowest thermocouple temperature as the surface boundary condition.
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