The coupled attitude and orbit dynamics of solar sails is studied. The shape of the sail is a simplified quasi-rhombic-pyramid that provides the structure helio-stablility properties. After adimensionalisation, the system is put in the form of a fast-slow dynamical system where the different time scales are explicitely related to the physical parameters of the system. The orientation of the body frame with respect to the inertial orbit frame is a fast phase that can be averaged out. This gives rise to a simplified formulation that only consists of the orbit dynamics perturbed by a flat sail with fixed attitude perpendicular to the direction of the sunlight. The results are exemplified using numerical simulations.

中文翻译：

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平面日稳定太阳帆的姿态轨道耦合

研究了太阳帆的耦合姿态和轨道动力学。帆的形状是一个简化的准菱形金字塔，它提供了结构的日光稳定性特性。在无量纲化之后，系统被置于快-慢动力系统的形式中，其中不同的时间尺度与系统的物理参数明确相关。机身框架相对于惯性轨道框架的方向是一个可以平均的快速相位。这产生了一个简化的公式，该公式仅包含由具有垂直于阳光方向的固定姿态的平帆扰动的轨道动力学。使用数值模拟来举例说明结果。