Interior Planning for The Habitation Module to be Installed Inside the Lunar Pit

Currently, numerous vertical holes leading to underground cavities have been discovered on the lunar surface. These vertical holes or underground cavities, such as lava tubes, are likely less affected by radiation exposure and meteorite impacts compared to the lunar surface. They also potentially have less temperature fluctuation, making them considered advantageous conditions for future lunar habitation bases. The authors have previously proposed a "minimal" structure as a "base camp" to serve as an initial outpost when humans begin to stay on the Moon. This base camp is designed to support both "manned exploration" and "unmanned construction" while also serving as a stepping stone towards "lunar habitation." This paper reports on the internal architectural planning and facility planning for the "habitation module" at this base camp. The "habitation module" proposed in this development is designed for four people staying six months, with the expanded main body size being 11m wide × 18m long. The module body is made of 2mm thick aluminum in a pillow-like shape and is an inflatable type, expanding with internal air pressure. The room floor is set 200mm below the module's center height. Here, life support systems, thermal circulation equipment, communication devices, and various living supplies are arranged, along with a laboratory and daily living areas. At the rear hatch end, there are four independent sleeping spaces. The area under the floor is mainly used as a plant cultivation area, with planting tank units, air conditioning units, and wastewater tanks. In this study, the shapes of each equipment were simplified, and a model was created to confirm whether the necessary functional equipment could fit within the limited volume without compromising inhabitant living conditions. Additionally, the paper also outlines the plan for the "plant cultivation area" located under the floor.