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The moon has abundant resources on the moon could be investigated and exploited. It is nonetheless important that the moon itself has always had a significant meaning to us, and therefore its original state must be highly respected and preserved as much as possible. Creating a livable space on the surface of the moon would require substantial amount of drastic changes which are time consuming, inefficient and therefore irrational. It is therefore we propose a space station not built directly on the surface but orbiting around the moon with a cable linked to the surface, a station that makes possible exploitation and investigation of the moon resources for mankind without changing its original state – MOMENTUM VIRIUM

Technical Report:
1. Orbital Issues and Attitude Control Systems:
Given two celestial bodies, there are 5 different Lagrangian points (where all the forces acting on a third body are null): Momentum Virium will be placed at L1 (Earth-Moon direction, 55’000 km above Moon’s surface). Since it is an unstable point, there is required to control the position and the orientation of the lunar base. Using the gyroscopic effect given by the structure and controlling their rotation, one can control the attitude of the lunar station.

2. Material Characterization and Station Sizing:
The materials used for the habitat rings are light yet strong; an Aluminium (density 2’700 kg/m³, 80% and can be obtained directly from the Moon) and Titanium (density 4’500 kg/m³, 20%) alloy is used. As for the structure, connected to the habitats with magnetic suspensions, 100% Titanium is used in order to create optimum gyroscopic effect which increases in proportion to the weight.

To achieve a balanced configuration, the space mirror (100% Beryllium, 1’850 kg/m³) will function as the counterweight for the station, placed 120’000 km above and connected to the station through another carbon nanotube cable. Estimating an initial population of 100,000 people increasing with time, the radii of the rings are:

1) R1 = 1,600 m
2) R2 = 3,200 m
3) R3 = 4,800 m

Assuming a rectangular shape (for simplicity of calculations, with a thickness of 0.5 m, the total volume of the shells of rings is 3.4864 x 10 7 m³ . This means that the total mass of the rings is 1.06×10^11 kg.

3. Energy system and Generation:
One of the most important aspect is the energy supply: using the most efficient solar energy cell ever created, it is possible, with a proper area sizing, to provide sufficient amount of energy required by the station with the cell. In fact, by placing the cells along the side surface of the outer and inner ring (500 m wide) a useful area of 6.4 x 106 m² is obtained. Finally, assuming a mean irradiated power as 1’400 w/m² , and an efficiency of 45%, the total energy generated reaches up to 4.32GWatt.