Continuous-thrust Trajectory Optimization in Near-earth Space

摘要：

Direct approach is presented to optimize continuous-thrust orbit transfers in near-Earth space with a wide range of thrusting acceleration magnitude levels. Both minimum-time and fuel-saving transfers with thrust-to-weight ratios on the order of 10-5 ～ 10-1 are solved. For transfers with thrust-toweight ratios on the order of 10-3～10-1,direct control parameterization is utilized;for transfers with thrust-to-weight ratios on the order of 10-5～10-4, orbital averaging is employed. A set of equinoctial elements is used to govern the equations of motion, avoiding singularities at zero eccentricity and inclination. The optimal control problem is converted to parameter optimization problem solved by nonlinear programming. Multiple shooting is utilized to further improve the convergence robustness.

关键词： Continuous-thrust Direct Approach Multiple Shooting Orbital Averaging

作者: Gao Yang

作者单位: Academy of Opto-Electronics, Chinese Academy of Sciences P.O.Box 8701,Beijing 100080,China,P.R.

会议类型: 国际会议

会议名称: The 11th International Space Conference of Pacific-basin Societies(第11届环太平洋国际航天会议)

会议地点: 北京

会议语种:英文

页码: 174-184

在线出版日期: 2007-05-16（万方平台首次上网日期，不代表论文的发表时间）