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首页> 外文期刊>Journal of guidance, control, and dynamics >Sail-Assisted End-of-Life Disposal of Low-Earth-Orbit Satellites
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Sail-Assisted End-of-Life Disposal of Low-Earth-Orbit Satellites

机译：航行辅助下的低地球轨道卫星的报废处理

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摘要

A technique of sail-assisted deorbiting has been put forward for the upper part of the low-Earth-orbit region where solar radiation pressure dominates over the atmospheric drag. The environmental torques (gravity-gradient, solar, and aerodynamic) can be employed to point the sail's normal so that the solar radiation pressure force generates the orbit-averaged decelerating effect. The damping control torque, though required, is very small and can be provided even by weak nanosatellite magnetorquers. Attitude stability of the quasi-hyperbolic regime is ensured by keeping the spin rate within a certain small neighborhood of zero. The resulting coupled orbit-attitude spacecraft motion leads to rapid end-of-life disposal: Exploiting the solar radiation pressure force at altitudes above 700 km increases the orbital decay rate by up to several times compared with traditional purely drag-based deorbiting techniques. Upon reaching lower altitudes, the sailcraft attitude naturally evolves to the aerostabilized state, and the subsequent (final) stage of the deorbitation process is due to the atmospheric drag.
机译：对于低地球轨道区域的上部，提出了一种风帆辅助的离轨技术，在该区域，太阳辐射压力在大气阻力上占主导地位。可以采用环境转矩（重力梯度，太阳和空气动力）来指向帆的法线，以使太阳辐射压力产生轨道平均的减速效果。尽管需要阻尼控制转矩，但是它很小，即使由弱的纳米卫星磁矩也可以提供。通过将自旋速率保持在零的某个小范围内，可以确保准双曲线状态的姿态稳定性。由此产生的耦合的轨道-高度航天器运动导致了报废的迅速结束：与传统的纯基于阻力的除轨技术相比，在700 km以上的海拔高度利用太阳辐射压力可使轨道衰减率提高多达几倍。到达较低高度后，帆艇姿态自然会演变为空气稳定状态，并且去轨过程的后续（最终）阶段归因于大气阻力。

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