Research Progress of Lunar In-situ Water Production Techniques
With the continuous advancement of deep space exploration,lunar exploration will be the first step for mankind to carry out interplanetary exploration and expand living territory.The lunar in-situ resource utilization will be a key technical approach to support manned exploration and long-term survival on the Moon surface.Almost all space powers are carrying out continuous research on lunar in-situ water production technology,and China has also listed lunar surface in-situ water production as one of the key technologies for lunar exploration missions.Lunar in-situ water production can be mainly di-vided into two methods:polar water ice exploration/extraction and hydrogen reduction of lunar regolith.The water ice resources that had been detected are mainly located in the lunar polar region,with un-even distribution and great difficulty in extraction method.Many different types of polar water ice ex-ploration and extraction schemes have been put forward,but the actual effect needs to be verified by sufficient verification experiments and the lunar in-situ test.Hydrogen reduction of lunar regolith can be used for in-situ water production,and its working conditions are not limited by the region,and its appli-cation scope is wide.However,there are some remaining technical limitations such as extreme reaction condition requirements and high energy consumption,which implies urgent demand to make break-throughs in energy conservation and effective ingredient enrichment.Thus,according to the develop-ment strategy deployment of lunar exploration missions and the requirements of in-situ water resource acquisition technology in the future,some suggestions are put forward on developing the key develop-ment path of in-situ water resource acquisition technology in the future.Target areas for future explo-ration missions,in-situ energy acquisition scheme,security and reliability of different technologies will be used as the main basis for different technology selection.It is hoped that this work will provide guidance for in-situ resource utilization in future lunar exploration missions.
Lunar detectionIn-situ water productionWater ice extractionLunar soil hydrogen reduction
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