Study of Launch Window Design for Lunar Soft-landing Mission like the 2nd Stage of China Lunar Exploration Program
- Paper number
IAC-09.A3.2INT.12
- Author
Mr. Yuzhu Bai, China
- Year
2009
- Abstract
A suit of method of window calculation and trajectory design for lunar soft-landing mission like the 2nd stage of China Lunar Exploration Program is studied. Aiming at a lunar probe which passes launch phase, translunar phase, lunar orbit phase and soft-landing phase, this paper lists the engineering constraints for project like the 2nd stage of China Lunar Exploration Program. Considering constraints include position, lighting and TT&C of the feature points, combining with characteristics of the translunar trajectory, using retroversion mode of landing point→perilune→translunar injection→launch center, this paper fast calculates the launch window of the lunar probe, during which libration of moon in longitude is considered. Initial value of the translunar trajectory’s elements are easily calculated after launch time is specified in the launch window, then the precision trajectory is obtained by search. This approach will be of important value for the launch window calculation and the orbital design in the second and third stage of China Lunar Exploration Program, and will also be of referential value for other moon explorations and planet explorations.
- Abstract document
- Manuscript document
IAC-09.A3.2INT.12.pdf (🔒 authorized access only).
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