Abstract

This paper presents an approach to construct an interactive geometric model of a spacecraft’s outer surface for solving different applied problems related to the computation of integrals over the spacecraft’s surface, with the determination of the visibility of the surface parts taking into account their mutual overlapping, and with the determination of the surface projection on an arbitrary plane at the prescribed projection. The surface is represented by the set of geometric primitives; it is possible to add/remove elements and simulate moving elements of structure (antennas, manipulators, and solar panels). This approach is implemented as a program module used in complexes of mathematical modeling for computing the forces and moments of light pressure and aerodynamic drag, modeling the operation of spacecraft solar panels and the thermal modes, and modeling the diffraction of electromagnetic waves on the spacecraft’s surface. An example where geometric model is used for computing the forces and moments of aerodynamic drag acting on the spacecraft in flight is presented.

中文翻译：

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航天器外表面交互式几何模型的构建

摘要

本文提出了一种构建航天器外表面的交互式几何模型的方法，该方法用于解决与航天器表面上的积分计算有关的不同应用问题，并在考虑到表面部分相互重叠的情况下确定表面部分的可见性，以及确定在预定投影上在任意平面上的表面投影。该表面由一组几何图元表示。可以添加/删除元素并模拟结构的移动元素（天线，操纵器和太阳能电池板）。这种方法是作为程序模块实现的，该程序模块用于数学建模的复合体，用于计算轻压力和气动阻力的力和矩，对航天器太阳能电池板的运行和热模式进行建模，对航天器表面电磁波的衍射进行建模。给出了一个示例，其中使用几何模型来计算作用在飞行中的航天器上的空气动力学阻力的力和力矩。