关键词: 结构参数, 试验, 优化, 阻力矩模型, 钻杆, 钻取采样, 复眼透镜，超精密加工，光场成像

Abstract: The transportation resistance of auger for lunar subsurface drill-sampling is analyzed. Based on continuum assumption of granular material mechanics, the transportation resistance torque model is built. With the model, the relationship of transportation resistance and the parameters of auger diameter and helix angle is analyzed, and the range of parameters is given. By using the power of transportation as the purpose and structure parameters of auger as the variable, the structure parameters of auger is optimized, and the transportation power is lowered by 30.5%. Testing experiment is finished in order to test the transportation resistance of optimized auger, and the result is that the transportation resistance increases with depth. The result offers theoretical basis for auger design of lunar subsurface drill-sampling.

Key words: Auger, Drill-sampling, Experiment, Optimization, Resistance torque model, Structure parameter, compound eye, ultra-precision machining, light filed imaging