TY - JOUR
TI - Scheme design and experiment validation of multiple sampling strategies on weak gravity asteroid
AU - Zhao Zeng
AU - He Zhang
AU - Zeng Fu-Ming
AU - Lai Xiao-Ming
AU - Yin Shen
AU - Zeng Ting
AU - Sun Qi-Chen
AU - Liu De-Yun
AU - Li Qiang
AU - Zhang Jia-Bo
JN - Thermal Science
PY - 2025
VL - 29
IS - 2
SP - 1351
EP - 1359
PT - Article
AB - Asteroids hold invaluable scientific information and provide critical  insights into the origins and evolution of the solar system, highlighting  the significance of asteroid sample-return missions. However, the diverse  typology of these asteroids, limited understanding of their surface geology,  and extremely weak gravity present substantial challenges, necessitating  technologies with high geological adaptability, low reaction forces, and  rapid sampling capabilities. In response, six novel and heterogeneous  asteroid sampling schemes were developed and rigorously analyzed through  comparative studies and test validation, focusing on adaptability, sampling  time, reaction force, and sample volume. Results confirm that all six  schemes enable rapid sampling under low reaction forces, meeting design  objectives. Notably, the rock-breaking and gas-excitation hybrid and the  positional kinetic energy-induced directional sampling technique  demonstrate superior adaptability, simplicity, reliability, and  repeatability, marking them as promising candidates for further research.