Journal of Space Science and Experiment >
Research on Method and Dynamics of Asteroid Mining
Online published: 2024-12-14
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With the increase of human demand for natural resources and the consumption of mineral resources on the Earth, it has become an inevitable trend of development to obtain resources from outer space, asteroid mining has a very high economic value. In recent years, NASA's OSIRIS-REx and JAXA's Hayabusa 2 missions have both successfully returned samples from asteroids. China's Tianwen-2 mission will also carry out asteroid sampling and return. However, asteroid mining just remains at the conceptual stage. In this work, we studied two asteroid mining schemes, surface mining and fly capture, as well as the associated dynamical problems, based on the modeling of asteroid polyhedral gravitational fields and spherical harmonic series surface. For surface mining, we proposed an efficient asteroid surface mining method, with selecting asteroid Bennu as the target, and analyzed the surface dynamical characteristics of Bennu in relation to the requirements for surface mining. For fly capture, we used a concentrated mass nonlinear spring-damper model to simulate the dynamic process of capturing an asteroid with a flexible tether net, and analyzed the displacement, velocity and acceleration of some nodes, which could provide theoretical guidance for future asteroid mining missions.
Key words: asteroid; mining scheme; dynamics; surface mining; fly capture
Nuo CHEN , Fengdi ZHANG , Qifan HE , Yaoyao NIE , Yu ZHANG , Yonglong ZHANG . Research on Method and Dynamics of Asteroid Mining[J]. Journal of Space Science and Experiment, 2024 , 1(3) : 98 -107 . DOI: 10.19963/j.cnki.2097-4302.2024.03.012
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