Orbital Blocking Game Near Earth-Moon L1 Libration Point  

作　　者：Hongyu Han Zhaohui Dang 

机构地区：[1]School of Astronautics,Northwestern Polytechnical University,Xi’an,710072,China [2]National Key Laboratory of Aerospace Flight Dynamics,Northwestern Polytechnical University,Xi’an,710072,China

出　　处：《Space(Science & Technology)》2023年第1期660-674,共15页空间科学与技术（英文）

基　　金：supported by the National Natural Science Foundation of China(no.12172288);the National Key Basic Research Program of China:Gravitational Wave Detection Project(nos.2021YFC2202601 and 2021YFC2202603).

摘　　要：This paper explores the blocking capabilities of a spacecraft deployed near Earth-Moon L1 libration point against another spacecraft attempting lunar gravity assist,based on theΔV required for interception.The study demonstrates that a pursuer at L1 libration point can effectively block low-energy evaders with minimalΔV expenditure,creating a blockade against their use of gravity assists.However,blocking against high-energy evaders is relatively weaker.Pursuers on Lyapunov orbits can execute blockades that L1 pursuers cannot,albeit with lower mission-capable rates.The paper discusses mission-capable rates for different Lyapunov orbits and evader energies,revealing that each Lyapunov orbit has its unique optimal blocking energy,decreasing as the Lyapunov orbit size expands.In addition,the paper proposes a strategy for evaders to bypass blockades by sacrificing a portion of theirΔV and verifies it numerically.The analysis covers the cost and benefits of the L1 libration point-related blockade,the importance of the mission-capable rate,and the possibility of lunar-orbit blocking.These findings provide insights for future research on orbital games in the Earth-Moon system and orbital blockade.

关 键 词：ORBITAL EARTH ORBITAL 

分 类 号：O17[理学—数学]