Research on multi-pipe drilling and pneumatic sampling technology for deep Martian soil

One of the main objectives of Mars sampling is to understand the geological structure, and the sampling technology for deep Martian soil is a key problem. In this study, a multi-pipe drilling and pneumatic sampling device for deep Martian soil was developed, which is the first application in the field of deep space exploration. Firstly, the multi-pipe drilling and pneumatic sampling schemes were determined, and the drilling and sampling feasibility were tested by means of a simulation based on DEM-CFD. Secondly, the structural design of the multi-pipe drilling and pneumatic sampling device were carried out, including key components such as the feeding mechanical, rotary mechanical, clamping and turning mechanical mechanisms. Thirdly, the control system for the multi-pipe drilling and pneumatic sampling device were developed, which can be used for real-time motor control and measurement of state parameters. Finally, multi-pipe assembling and pneumatic sampling experiments were carried out using the prototype. Furthermore, the multi-pipe drilling and pneumatic sampling device functioning were verified.