Speaker
Mr
Xiangyu Li
(Beijing Institude of Technology)
Description
The libration points and periodic orbits possess unique dynamics properties in multibody system, which have been exploited to design low-energy transfer for space mission. In this paper, we investigate the periodic orbits for planetary capture and propose an indirect planetary capture method. In new method, the periodic orbit is consider as a park orbit during the capture, which connects with the interplanetary trajectory and the target orbit by stable and unstable manifolds, respectively, at the corresponding periapsides respective to the planet (see in Fig. 1).
The indirect capture method is researched under the background of Mars. Firstly, the dynamic model of CRTBP is established. The libration points and halo orbits for Sun-Mars system is established. Secondly, the candidate halo orbit for capture is determined according to the periapsis distance of invariant manifolds. The amplitudes of halo orbits that suitable for park orbits are given. L1 and L2 halo orbits provide different capture opportunity. The phase angles of invariant manifolds are discussed. Finally, the efficiency of indirect capture method is compared with the direct periapsis capture. The results show that the cost for indirect capture is approximately constant regardless of the periapsis distance (see in Fig. 2). The indirect capture method could save velocity increment significantly at the cost of long transfer time. The new method for planetary capture can also applied to other planets and provide reference for future exploration mission.
| Applicant type | First author |
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Primary author
Mr
Xiangyu Li
(Beijing Institude of Technology)
Co-authors
Dr
Dong Qiao
(Beijing Institute of Technology)
Prof.
Pingyuan Cui
(Beijing Institute of Technology)
