木星系及行星际飞越探测的多次借力飞行轨道设计研究

Research on Multiple Gravity Assist Trajectories for a Jovian System Exploration and Planet Flyby Mission

根据我国木星系及行星际穿越探测任务规划,瞄准工程方案可行,对使用多次借力的地木转移轨道及行星飞越飞行轨道进行了深入研究分析。首先,对星际飞越目标进行了探讨,明确了满足任务约束的星际飞越目标;其次,对行星际飞行序列进行了优选,从探测器发射日期、发射双曲剩余速度的平方(C3)、深空机动、木星到达C3和总的任务时间角度,对比分析了多个星际飞行序列,给出了最优序列设计结果;最后,基于工程约束,对探测器的连续发射机会进行了优化设计,给出了探测器连续8天、11天和16天发射所需的发射C3和深空机动大小需求。研究结果表明:在2029—2032年期间,木星系及行星际穿越探测任务最优的深空飞行序列为地球-金星-地球-地球-木星-天王星,最优的发射日期集中在2029年10月份。

Interplanetary transfer Trajectories with multiple gravity assists,are designed for a Jovian system exploration and planet flyby mission,which aimsed at technically feasibilityle.Firstly,the target of planet interplanetary flyby is selected from Uranus and Neptune,with consideration of mission constraints which is suitable for the task.Secondly,the optimal trajectories exploiting the flybys of Venus,Earth(twice)and Jupiter to minimize the propellant propulsion consumed consumption are designed,and the flight project is optimal compared with other strategies,in terms of by the launch date,launch C3 energy,deep space maneuver,arrival C3 energy and task periodmission length.Finally,the launch opportunities for the explorer probe are calculated,which lasted about 8 days,11 days and 16 days continuously.The study shows that,from2029 to 2032,the Earth-Venus-Earth-Earth-Jupiter sequence series is optimal,and the launch window appears about Oct 2029.