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首页> 外文期刊>Optimal Control Applications and Methods >Geostationary debris mitigation using minimum time solar sail trajectories with eclipse constraints
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Geostationary debris mitigation using minimum time solar sail trajectories with eclipse constraints

机译：使用具有Eclipse限制的最小时间太阳帆轨迹的地静止碎片减缓

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摘要

Minimum time solar sailing trajectories are introduced using a combination of indirect and direct optimal control techniques. Here, large-scale, multiphase optimal control problems are solved using a pseudospectral collocation technique applied to an orbital debris mitigation concept. These solutions are obtained for realistic sail dimensions, producing multirevolution, Earth-centered trajectories while accounting for uncontrolled spacecraft dynamics in the eclipse regions. Specifically, minimum time solutions for orbit transfer and phasing maneuvers are obtained using only solar radiation pressure for propulsion and control. First, an optimal primer vector steering history is obtained through numerical approximation. Locally optimal, closed-form solutions are then implemented based on the primer vector direction, resulting in minimum time satisfaction of desired terminal orbital conditions. In addition, a novel solution strategy is presented for multiphase optimal control problems characterized by uncontrollable dynamics with flexible phase boundaries. The maneuvers presented will be shown to enable efficient orbital debris mitigation for large-scale debris in geostationary orbits.
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