A model of the electron concentration in a rocket engine (RE) plume is considered and patterns of plasma frequency distribution are presented using the example of the third stage of a Peacekeeper intercontinental ballistic missile (ICBM). Pictures of 3D trajectories of rays scattered by the ICBM plume for a frequency of 0.4 GHz are presented. It is shown that the use of an algorithm for choosing the integration variable at each step and parallel vector calculations increases the efficiency of numerical electrodynamic modeling and allows one to perform a 3D analysis of the inhomogeneous plasma of the RE plume in the geometric-optical approximation.

中文翻译：

---

火箭发动机射流不均匀等离子体电磁波散射中射线轨迹的构建

考虑了火箭发动机 (RE) 羽流中的电子浓度模型，并以“和平卫士”洲际弹道导弹 (ICBM) 的第三级为例介绍了等离子体频率分布模式。展示了由洲际弹道导弹羽流散射的 0.4 GHz 频率的射线的 3D 轨迹图片。结果表明，在每个步骤中使用一种算法来选择积分变量和并行矢量计算可以提高数值电动力学建模的效率，并允许人们在几何光学近似中对 RE 羽流的不均匀等离子体进行 3D 分析.