Modified shape-based method for three-dimensional trajectory design  

作　　者：程兴 史晓宁 崔乃刚 

机构地区：[1]Dept.Astronautical Engineering,Harbin Institute of Technology

出　　处：《Journal of Harbin Institute of Technology(New Series)》2012年第2期1-4,共4页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China (Grant No. 61005060)

摘　　要：Although the shape-based method has been proven to be useful for low-thrust trajectory design,and be capable to provide near-optimal solution for a more accurate trajectory optimization method,it is slightly non-effective when used in some 3D cases.In this paper,a modified 3D shape-based method is proposed for earth trajectory design.In this approach,in consideration of the sinusoidal periodic variation in z direction of actual trajectory,a new exponential sinusoid model is chosen for the out-of-plane motion,with four coefficients such that four scalar out-of-plane boundary conditions can be satisfied.After deriving the 3D shape-based procedure,low-thrust trajectory design example with modest inclination change is given.The results demonstrate that this modified approach is feasible for the transfer trajectory design,and comparing to the former shape-based method,the z direction solution is more coincident with the actual situation,furthermore,the solution may be used for further mission planning,trajectory evaluation and optimization.Although the shape-based method has been proven to be useful for low-thrust trajectory design, and be capable to provide near-optimal solution for a more accurate trajectory optimization method, it is slightly non- effective when used in some 3D cases. In this paper, a modified 3D shape-based method is proposed for earth trajectory design. In this approach, in consideration of the sinusoidal periodic variation in z direction of actual trajectory, a new exponential sinusoid model is chosen for the out-of-plane motion, with four coefficients such that four scalar out-of-plane boundary conditions can be satisfied. After deriving the 3D shape-based procedure, low-thrust trajectory design example with modest inclination change is given. The results demonstrate that this modified approach is feasible for the transfer trajectory design, and comparing to the former shape-based meth- od, the z direction solution is more coincident with the actual situation, furthermore, the solution may be used for further mission planning, trajectory evaluation and optimization.

关 键 词：modified shape-based three dimensional LOW-THRUST trajectory design 

分 类 号：V412.4[航空宇航科学与技术—航空宇航推进理论与工程]