【摘要】 对LEO-LEO轨道转移任务对航天器气动砰击异面辅助变轨的轨迹优化进行了研究。在优化求解过程中将大气层内的无动力下降段轨迹与之后三段轨迹分开考虑而转为二层优化问题。分析了气动砰击异面辅助变轨的燃料消耗,讨论了不同发动机最大推力对大气层内的飞行轨迹、飞行速度、驻点热流等的影响。仿真结果表明:气动砰击异面辅助变轨在降低燃料消耗、解决飞行器热防护问题,以及提高航天器轨道机动能力上有较大的优势。更多还原

【Abstract】 The coplanar aerobang orbit transfer trajectory optimization of spacecraft aiming at the LEO-LEO orbit transfer mission was studied in this paper.The trajectory of non-power was separated with the trajectories of the later three others in the process of optimization,which was transformed into a two-level optimization problem.The fuel consumption of the coplanar aerobang orbit transfer was analyzed,and the influence of maximum engine thrust on flight path,flight speed and heating rate in atmosphere was discussed.The simulation results showed that coplanar aerobang orbit transfer had great advantages in reducing fuel consumption,solving spacecraft thermal protection problems and improving the spacecraft in-orbit mobility.更多还原