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An Orbit Control and Optimization for Switching Landing Site in Emergency in TransEarth Trajectory

 FENG  Fei, ZHANG  Ya-Sheng, ZHANG  An-Li   

  1. 1.Department of Graduate Management, Space Engineering University, Beijing 101416, China;2.Department of Space Command, Space Engineering University, Beijing 101416, China;3.Taiyuan Satellite Launch Center, Technology Department, Taiyuan 030027, China.
  • Online:2018-04-25 Published:2018-05-16

Abstract: Abstract:Aiming at the characteristics of Lunar exploration mission, to enhance the safety during reentry process and avoid adverse weather conditions which may appear on the main landing site, an impulse maneuver strategy in trajectory is put forward and optimized, which particularly aims at some emergency situations happening in prime landing site after transearth injection and having to land in backup landing site. Firstly, a practicable iteration method is proposed, which takes perturbation into account in solving Lambert problem. Subsequently, combining with Primer Vector and Simulated Annealing method, an interactive optimization is proposed, and the optimal energy consuming is 0.025 2 km/s, which is able to meet the constraints of engineering.  

Key words: Keywords:Lunar return; landing site transfer, Lambert problem, interactive optimizatio

CLC Number: 

  • 中图分类号: V412.41