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首页> 外文期刊>Transactions of the Japan society for aeronautical and space sciences >Hypervelocity Trajectories of Ballistic Entry Using Improved Matched Asymptotic Expansions
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Hypervelocity Trajectories of Ballistic Entry Using Improved Matched Asymptotic Expansions

机译:使用改进的匹配渐近展开的弹道进入超高速轨迹

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摘要

Explicit analytic solutions for a non-lifting vehicle entering the planetary atmosphere along a ballistic trajectory at near circular orbital speed are developed in closed form using improved matched asymptotic expansions. The closed-form solutions are presented incorporate gravitational and centrifugal terms with the aerodynamic term after the matching process. In the improved technique, the second-order solutions are obtained by first considering the perturbations between the uniformly valid first-order solutions and the exact solutions.
机译:使用改进的匹配渐近展开,以闭合形式开发了一种非起重车辆沿弹道以近圆形轨道速度进入行星大气的显式解析解。在匹配过程之后,提出了封闭形式的解决方案,其中包括重力和离心项以及空气动力学项。在改进的技术中,通过首先考虑一致有效的一阶解和精确解之间的扰动来获得二阶解。

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