Design of composite sampling system for surface soil of extraterrestrial bodies

Space resource development has become a frontier hot topic in international space exploration. Amidst the growing scarcity of Earth?s resources and rare metals, the harnessing of asteroid resources has risen to prominence as a principal avenue of exploration. The utilization of asteroid resources necessitates extensive regolith mining operations. Catering to the demands of extensive space activities, extra?terrestrial construction, and resource development, this paper presents the design and simulation analysis of an extraterrestrial surface regolith composite sampling system. The findings demonstrate that the composite sampling approach, which combines spiral drilling and transport with kinetic energy directional excitation, is highly effective. It is capable of collecting no less than 500 g within a mere 5 seconds at a rotation speed of 3000 rpm, while the reaction force exerted by the brush remains below 5 N, thus satisfying the requirement for a low reaction force.