Space elevator technology is the key to realizing lowcost, efficient and safe space transportation. The traditional earth elevator and lunar elevator require material strength far beyond the existing technical level, and it is very difficult to realize the project. Saturn's moons are generally small in mass. The construction of the Saturn's moon space elevator can overcome the technical bottleneck of existing materials and greatly promote the exploration, development and utilization of the Saturn system. First, taking Enceladus as an example, the "rigid rodbead point" model of the ladder is established, and the Lagrangian dynamic equation is derived. On this basis, the stability analysis of the system is completed. The linear stability theory and Lagrange's theorem are used to analyze the stability characteristics of the system under different discrete precisions and the mass of the space station, and the calculation results are extended to other satellites of the Saturn galaxy. After that, the concept of the Saturn space elevator network is proposed, and the elevator network configuration which can realize no working medium transfer between any moons is preliminarily designed. Finally, the efficiency and construction feasibility of the elevator network are analyzed. The calculation results show that all the elevators in the designed elevator network can remain stable at the equilibrium position, and some of the ladders can be constructed using existing composite materials. Compared with the traditional orbital maneuvering method, the ladder network can save the speed increment of several kilometers per second, and has huge potential application value. The method proposed in this paper and the conclusions obtained can provide support for the further design of the elevator network.
李文博,龚胜平.太空天梯网的稳定性分析与应用构想[J].动力学与控制学报,2023,21(9):11~22; Li Wenbo, Gong Shengping. Stability Analysis and Application Conception of Space Elevator Network[J]. Journal of Dynamics and Control,2023,21(9):11-22.复制