Launch Vehicle Ascent Trajectory Optimization Based on Modified Gauss Pseudospectral Method

摘要：

　　A direct method is discussed for multistage launch vehicle ascent trajectory optimization.First the optimal control problem is modeled with the performance index as maximum terminal mass.A modified Gauss Pseudospectral method is used to design a rapid optimal algorithm for multistage launch vehicle ascent trajectory.The nonlinear terminal state constraints are converted into linear terminal state constraints through state equation matrix and Gauss weight coefficient.Based on linear gravity assumption,the analytical vacuum solution is obtained and used as initial guess.The simulation shows that the proposed algorithm can achieve the trajectory optimal goal with high precision and rapid convergence when all the terminal and path constraints are satisfied.

关键词： Gauss Pseudospectral Method Trajectory Optimization Ascent Flight Multistage Launch Vehicle

作者: Zhang Qiuhong Li Zhaoying Li Huifeng

作者单位: School of Astronautics,Beihang University,Beijing 100191

会议类型: 国际会议

会议名称: 第26届中国控制与决策会议(2014 CCDC)

会议地点: 长沙

会议语种:英文

页码: 646-651

在线出版日期: 2014-05-31（万方平台首次上网日期，不代表论文的发表时间）