一种三脉冲近月制动定时定点着陆瞄准方法
By employing a three-pulse lunar braking timing and positioning landing aiming method, and utilizing the perturbation rate difference of the lunar orbital plane and orbital control strategies, the problem of propellant consumption in unmanned lunar sample return missions on the far side of the moon was solved. This method achieves high-precision timing and positioning landing and on-time takeoff, and is suitable for unmanned lunar sample return missions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING INST OF SPACECRAFT SYST ENG
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies make it difficult to achieve high-precision timing and positioning of the landing site in unmanned sample return missions on the far side of the moon without consuming additional propellant, especially given the rugged terrain on the far side of the moon and the differences in orbital longitude caused by launch window variations.
The three-pulse lunar braking timing and point landing aiming method is adopted. By utilizing the perturbation rate difference of the lunar elliptical orbit plane with different periods, the lunar parking elliptical orbit is carefully designed. Combined with the finite thrust model and the accurate prediction model, the orbit control strategy is calculated to achieve the adjustment of parameters in the orbit plane to achieve accurate aiming at targets outside the orbit plane.
Without increasing propellant consumption, it achieved high-precision, timed, and point-based landing and aiming at the sampling area on the far side of the moon, meeting the mission requirements for timed and point-based landing and on-time takeoff, reducing the consumption of normal velocity increment for orbital plane correction, and is suitable for long-duration lunar unmanned sampling and return missions in lunar orbit.
Smart Images
Figure CN120793230B_ABST