Low-cost mission to mulitple asteroid flybys and sample return for the 2015-2025

The feasible low-cost mission scenario to asteroid flyby and sample return for the 2015-2025 is investigated. The emphasis is put on the potential candidate selection and design of preliminary interplanetary transfer trajectory in this paper. According to different scientific motivations, some potential candidates having different spectral type and physical property were selected. Some optimal rendezvous and sample return opportunities were presented based on the mission constraints. In addition, the preliminary transfer trajectory profile of flyby and rendezvous with different spectral type asteroid in one mission is discussed. Finally, some important parameters of transfer trajectory are analyzed, which would have a direct impact on the design of other spacecraft subsystem, such as communication, power and thermal control subsystem.