TY - JOUR
TI - Design and validation of a high speed, high flexibility excitation sampling brush for deep space sampling
AU - Hu Hua-Jun
AU - Zhao Zeng
AU - Zhao Zhong-Xian
AU - Yin Zhong-Wang
AU - Yu Hai-Bin
AU - Zhang Nai
AU - Lin Yun-Cheng
AU - Yuan Hong-Ying
AU - Wang Guo-Xin
JN - Thermal Science
PY - 2025
VL - 29
IS - 2
SP - 1423
EP - 1428
PT - Article
AB - Asteroids are usually sampled by touch due to their small size and weak  gravity, and the sampling time is short. Flexible brush high speed  excitation sampling is an efficient and reliable sampling method. This paper  designs a brush-type symmetrical rotating double-wheel structure brush  excitation sampling mechanism for asteroid surface touch sampling in a short  time. According to the characteristics of the brush sampling mechanism, a  mathematical model for calculating the sampling volume of the sampling  mechanism with multiple parameters is established. The sampling volume is  verified by discrete element simulation method and microgravity drop tower  test. The results show that for different gradations of stellar soil, the  theoretical calculation and verification results are relatively consistent.  It shows that the theoretical model can be used to estimate the sampling  volume during brush excitation sampling. The results of this paper provide a  basis for the subsequent asteroid sampling return.