论文标题
盾牌哑铃L5定居点
Shielded dumbbell L5 settlement
论文作者
论文摘要
我们提出了Earth-moon L5旋转沉降的两球哑铃配置。选择两球配置以最大程度地减少主导质量预算的辐射屏蔽质量。该定居点具有最大20 msv/年辐射条件和1 g人工重力。如果有200人，它的重量为89000吨，每人提供60 m $^2 $的地板空间。辐射屏蔽是由小行星岩石制成的，由质量为2％的水层增强，用于中子适度，而薄薄的硼10层用于捕获热中子。我们分析了将材料从小行星移动到L5的推进选项。 FFC剑桥工艺可用于从小行星中提取氧气。然后将氧用作电推进剂。人们还可以找到含水的小行星，并将水用于相同的目的。如果一个人想避免推进剂提取，则可以使用一支电动帆。定居者通过在他们拥有的附近的机器人工厂中通过零延迟的索引来生产和销售新的定居点，以资助他们的项目。如果LEO推出成本下降到$ \ sim $ \ $ 300/kg，则经济案例看起来很有希望。
We present a two-sphere dumbbell configuration of a rotating settlement at Earth-Moon L5. The two-sphere configuration is chosen to minimize the radiation shielding mass which dominates the mass budget. The settlement has max 20 mSv/year radiation conditions and 1 g artificial gravity. If made for 200 people, it weighs 89000 tonnes and provides 60 m$^2$ of floorspace per person. The radiation shield is made of asteroid rock, augmented by a water layer with 2 % of the mass for neutron moderation, and a thin boron-10 layer for capturing the thermalized neutrons. We analyze the propulsion options for moving the material from asteroids to L5. The FFC Cambridge process can be used to extract oxygen from asteroid regolith. The oxygen is then used as Electric Propulsion propellant. One can also find a water-bearing asteroid and use water for the same purpose. If one wants to avoid propellant extraction, one can use a fleet of electric sails. The settlers fund their project by producing and selling new settlements by zero-delay teleoperation in the nearby robotic factory which they own. The economic case looks promising if LEO launch costs drop below $\sim$ \$300/kg.
