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Multidisciplinary Optimization of Starbody Waverider Shapes for Lifting Aerocapture with Orbital Plane Change

机译:随轨道平面变化而升起的空中捕获的星体波状体形状的多学科优化

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A conceptual study is performed to evaluate the concept of combining orbital plane change into a lifting aerocapture maneuver. A unique method of parameterizing a specific class of waverider that would be especially applicable to these maneuvers is presented. Aerodynamic and trajectory models are used to characterize their performance. A simplified control system is modeled in order to assess the effectiveness of such geometries in accomplishing desired mission objectives. A gradient based routine has been run to perform coupled vehicle shape and trajectory optimization. It is found that with high-performing aerodynamic designs, considerable plane change is possible, on the order of 85 degrees, as well as successful capture into a low apoapsis orbit. General guidelines are given for the limitations of the application of aerodynamic plane change. Finally, conclusions are reached about the ideal characteristics of the lifting body, as well as general behavior about the nature of the trajectory. It is found that increasing the plane change of the maneuver has an adverse effect on important design metrics such as maximum g-load and volumetric efficiency.
机译:进行了一项概念研究,以评估将轨道平面变化与起升航空捕获操纵相结合的概念。提出了一种独特的参数化特定类型的乘波器的方法,该方法将特别适用于这些操作。空气动力学和轨迹模型用于表征其性能。为了简化这种控制系统的建模,以评估这种几何形状在实现所需任务目标方面的有效性。已经运行了基于梯度的例程来执行耦合的车辆形状和轨迹优化。已经发现,采用高性能的空气动力学设计,可以进行大约85度的平面变化,并且可以成功地捕获到低顶峰轨道中。针对空气动力学平面变化应用的局限性,给出了通用指南。最后,得出关于提升体的理想特性以及轨迹性质的一般行为的结论。发现增加操纵的平面变化对重要的设计指标例如最大的g载荷和体积效率具有不利影响。

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