The Dynamical Characteristics of the Triangular Libration Points in Earth-Moon System and Their Applications
The triangular libration points L4 and L5 of the restrict three-body problem are in special locations, which compose equilateral triangles with the two primaries. They are stable not only in the linearized model but also under nonlinear perturbations if certain conditions are satisfied. Their applications in deep space exploration are prospective. This paper focuses on the sun-earth system and the earth-moon system, and discusses the stability of the triangular libration points and the possibility to locate a probe around them. Based on the acceptable region of motion during the spacecrafts lifetime, the initial deviations from these points (including position and speed) are calculated. Our research shows that it is nearly impossible to keep the spacecraft around these points without control due to the large perturbations from the fourth body (such as Sun). Station-keeping strategies are necessary during the lifetime of the spacecraft.
Earth-Moon System Triangular Libration Point Stable Region Lunar Ezploration
Liu Huigen Liu Lin
Astronomy Department,Nanjing University,Nanjing 210093 Institute for Space Environment and Astrodynamics, Nanjing University, Nanjing 210093
国际会议
The 11th International Space Conference of Pacific-basin Societies(第11届环太平洋国际航天会议)
北京
英文
719-722
2007-05-16（万方平台首次上网日期，不代表论文的发表时间）