2.1 – Where do you want to build your Moon Camp? Explain your choice.
The Cabeus impact crater in the polar region (29. 42° 83. 88° S) is a permanently illuminated area of the lunar poles, which is exposed to sunlight most of the time and has low temperature differences and low requirements for insulation design. It is suitable as a test site for lunar base construction. There are also permanently shaded areas near here where water ice resources can be harvested and utilised for base construction and personnel use and research.
The difficulty of building a base here is not very high and it is suitable for gaining experience in order to guarantee the achievement of exploration purposes. Moreover, the Cabeus impact crater has a clear advantage in terms of the need for water and energy resources, given that sustainable human habitation is the main concern.
2.2 – How do you plan to build your Moon Camp? Consider how you can utilise the Moon’s natural resources, and which materials you would need to bring from Earth. Describe the techniques, materials and your design choices.
We will use the following two materials:
geopolymer concrete: the advantages of geopolymer concrete over cement concrete are that it can be made active with a small amount of exciter to stimulate the lunar soil and requires less cementitious material, but its disadvantages are that mixing water is scarce, it cannot be naturally cured and formed under ultra-high vacuum conditions on the lunar surface, all preparation processes need to be carried out under sealed and pressurised conditions, it cannot be exposed to the lunar environment until it has developed sufficient strength, and maintenance The conditions are more demanding.
Dry-mix autoclaved lunar concrete: The main advantages of dry-mix autoclaved concrete for lunar construction are the relatively short curing time compared to cement concrete, the closed autoclave curing environment, which is not affected by external influences, and the relative stability of the bound water in the resulting product. However, the calcium material required for this process needs to be transported from Earth in the early stages, with the amount of calcium material accounting for 10%-15% of the total mass of the powder, and the minimum amount of water required for the autoclaved hydrothermal reaction to bind water is approximately 10% of the total mass of the powder. The process of preparing this material must stimulate the lunar soil reaction activity under saturated vapour pressure to cause the mixture to undergo a hydrothermal synthesis reaction in order to obtain strength.
2.3 – How does your Moon Camp protect and provide shelter to your astronauts against the Moon’s harsh environment?
For one thing, our base has a top and bottom structure. For high-energy particle flows, we can go to the second level of refuge protected by lead plates; for micrometeorite flows, we can go to the bottom level.
Secondly, there is a full range of observation equipment carried by the lunar surface and relay satellite constellation, which provides early warning of danger.
Thirdly, in the event that instruments report an unbearable danger to the base, a vehicle can leave the lunar surface and dock with a space station in lunar orbit.
Our base will also employ a meteorite defence system for active defence, using missiles or anti-aircraft guns to deflect large meteorites from their orbits, with the help of a network of satellite observations and phased-array radar. Small, micro-meteorites are then vaporised using laser arrays.