Analytically-derived Aerodynamic Force and Moment Coecients of Resident Space Objects in Free-Molecular Flow
Analytically-derived Aerodynamic Force and Moment Coecients of Resident Space Objects in Free-Molecular Flow
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DOI：
10.2514/6.2014-0728
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发表时间：
2014-01
期刊：
影响因子：
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通讯作者：
Kenneth A. Hart;S. Dutta;Kyle R. Simonis;B. Steinfeldt;R. Braun
中科院分区：
文献类型：
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作者：
Kenneth A. Hart;S. Dutta;Kyle R. Simonis;B. Steinfeldt;R. Braun
作用于自由分子状态下的一般物体，推导出气动力和力矩表达式。介绍了解析空气动力学预测方法，并建立了球面、圆柱、面板和矩形棱镜的解析空气动力学预测关系。利用nasa开发的直接模拟蒙特卡罗分析代码对解析表达式进行了验证，结果表明，解析表达式的精度在0.38%以内。这些关于迎角、侧滑角、自由流条件、壁面温度和调节系数的广义解析表达式允许对罕见的空气动力学进行近乎瞬时的计算，并实现空间态势感知分析。
acting on a general body in free-molecular regime to derive aerodynamic force and moment expressions. The analytical aerodynamics prediction method is described and relations have been developed for the sphere, cylinder, panel, and rectangular prism. The NASA-developed Direct Simulation Monte Carlo Analysis Code is used to validate the analytical expressions and it is shown that expressions are accurate within 0.38%. These generalized analytic expressions in terms of angle of attack, sideslip angle, freestream conditions, wall temperature, and accommodation coecients allow near-instantaneous computation of the rareed aerodynamics and enables space situation awareness analysis.