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Trajectory optimization for the Horyu-VI international lunar mission

Astrodynamics 2021年第3期5卷 263-278页

作者： Federico De Grossi Paolo Marzioli Mengu Cho Fabio Santoni Christian Circi Sapienza University of Rome 00138 RomeItaly Kyushu Institute of Technology Kitakyushu 804-8550Japan

The Horyu-VI nano-satellite is an international lunar mission with the purpose of studying the lunar horizon glow(LHG)—a still unclear phenomenon caused by electrostatically charged lunar dust *** study analyzes the mission trajectory with the hypothesis that it is launched as a secondary payload of the NASA ARTEMIS-II *** particular,the effect of the solar gravity gradient is studied;in fact,depending on the starting relative position of the Moon,the Earth,and the Sun,the solar gradient acts differently on the trajectory—changing it ***,the transfer and lunar capture problem is solved in several cases with the initial Sun–Earth–Moon angle as the key ***,the inclination with respect to the Moon at capture is constrained to be ***,the problem of stabilization and circularization of the lunar orbit is addressed in a specific case,providing an estimate of the total propellant cost to reach the final orbit around the Moon.

关键词： trajectory optimization Artemis mission lunar mission lunar horizon glow(LHG) weak stability boundary

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First-round design of the flight scenario for Chang’e-2’s extended mission:take off from lunar orbit

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Acta Mechanica Sinica 2012年第5期28卷 1466-1478页

作者： Yang Gao Heng-Nian Li Sheng-Mao He State Key Laboratory of Astronautic Dynamics General Establishment of Space Science and Application Chinese Academy of Sciences

Chang＇e-2, Chinese second lunar probe, was inserted into a 100 km altitude low lunar orbit on October 9th, 2010, its purpose is to continuously photograph the lunar surface and possibly chosen landing sites for future lunar missions. The probe will still carry considerable amount of propellant after completing all prescribed tasks in about six months. After the successful launch of Chang＇e-2, we began designing the probe＇s subsequent flight scenario, considering a total impulse of 1 100 m/s for takeoff from low lunar orbit and a maximum 3× 10^6 km distance for Earth-probe telecom- munication. Our first-round effort proposed a preliminary flight scenario that involves consecutive arrivals at the halo orbits around the Earth-Moon L1/L2 and Sun-Earth L1/L2 points, near-Earth asteroid flyby, Earth return, and lunar impact. The designed solution of Chang＇e-2＇s subsequent flight scenario is a multi-segment flight trajectory that serves as a reference for making the final decision on Chang＇e-2＇s extended mission, which is a flight to the Sun-Earth L2 point, and a possible scheme of lunar impact via Earth flyby after remaining at the Sun-Earth L2 point was also presented. The proposed flight trajectory, which possesses acceptable solution accuracy for mission analysis, is a novel design that effectively exploits the invariant manifolds in the circular restricted three-body problem and the patched-manifold-conic method.

关键词： Chang'e-2 lunar mission Lagrange point Invariant manifold Patched-manifold-conic method

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月球和深空探测合作:中国月球和深空探测计划倡议引起国际关注

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Aerospace China 2023年第1期24卷 32-37页

作者： Ahmet Hamdi Takan Turkish SpaceAgency AnkaraTurkiye

In an era of unprecedented scientific advancements and ambitious space exploration goals,international collaboration has become a key driver of ***’s kind and peaceful invitation to engage in collaborative ventures within the International lunar Research Station(ILRS)and deep space exploration project presents a significant opportunity to respond with constructive contributions in engineering and scientific *** article aims to illuminate the potential advantages of becoming a partner in the ILRS and deep space exploration project,showcasing a selection of captivating missions that await *** embracing this generous and peace-promoting offer extended by China,the global scientific community can foster meaningful partnerships and achieve groundbreaking advancements in lunar and deep space ***’s resolute dedication to international cooperation in lunar and deep space exploration has resulted in immeasurable contributions,propelling our understanding of the universe and pushing the limits of human *** a shared vision,these collective endeavors have brought us closer to unraveling the enigmas of the cosmos and expanding the frontiers of our *** conducting a series of scientific experiments,Türkiye will actively contribute in the domains of science and *** upon the knowledge and expertise acquired through its own lunar mission,Türkiye has been diligently conducting a comprehensive analysis of the prospective realms of contribution delineated within the ILRS and deep space missions conducted thus far.

关键词： deep space exploration lunar mission scientific missions collaboration

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