Power consumption of lunar subsurface coring driller and earth environment stimulant experiments

Soil sample with physical and mechanical properties similar to real lunar soil is prepared as the drilling object. The power consumption model of coring driller is proposed and verified by coring experiments. The lower power consumption drilling procedure is obtained by analyzing the power consumption curve. To ensure high cording rate, lower rotary speed can decrease the drilling power consumption in the allowable range of resistance moment of drilling. The data calculated from the proposed model is in good agreement with the drilling experiment results. Thus, the proposed model can be used to predict the drilling power consumption.