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

机译:用轨道平面改变升降空气腐蚀的八角型波子的多学科优化

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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:进行概念研究以评估轨道平面变化将轨道平面变化的概念变为升降机机动。呈现了一种唯一的方法,可以参数化特定的Waverider,该WIVERIDER将特别适用于这些机动。空气动力学和轨迹模型用于表征其性能。建模简化的控制系统,以评估这种几何的有效性在实现所需的任务目标方面。已经运行了基于梯度的例程来执行耦合车辆形状和轨迹优化。发现,通过高性能的空气动力学设计,可能是相当大的平面变化,大约为85度,以及成功捕获到低Apopsis轨道。给出了空气动力学平面变化应用的局限性的一般指导。最后,结论涉及升降体的理想特征,以及关于轨迹性质的一般行为。结果发现,增加机动的平面变化对重要设计度量的不利影响,例如最大G负载和体积效率。

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