To build a sustainable space transportation system for human space exploration, the design and deployment of space infrastructure, such as in situ resource utilization plants, in-orbit propellant depots, and on-orbit servicing platforms, are critical. The design analysis and trade studies for these space-infrastructure systems require the consideration of not only the design of the infrastructure elements themselves, but also their supporting systems (e.g., storage and power) and logistics transportation while exploring various architecture options (e.g., location and technology). This paper proposes a system-level space infrastructure and logistics design optimization framework to perform architecture trade studies. A new space-infrastructure logistics optimization problem formulation is proposed that considers the internal interactions of infrastructure subsystems and their external synergistic effects with space logistics simultaneously. Because the full-size version of this proposed problem formulation can be computationally prohibitive, a new multifidelity optimization formulation is developed by varying the granularity of the commodity-type definition over the space logistics network; this multifidelity formulation can find an approximate solution to the full-size problem computationally efficiently with little sacrifice in the solution quality. The proposed problem formulation and method are applied to the design of in situ resource utilization systems in a multimission lunar exploration campaign to demonstrate their values.

为了构建用于人类太空探索的可持续空间运输系统，至关重要的是空间基础设施的设计和部署，例如原地资源利用厂，在轨推进剂仓库和在轨维修平台。这些空间基础设施系统的设计分析和贸易研究不仅需要考虑基础设施元素本身的设计，还需要考虑其支持系统（例如存储和电力）和物流运输，同时探索各种架构选择（例如位置）。和技术）。本文提出了一个系统级的空间基础设施和物流设计优化框架来进行建筑行业研究。提出了一种新的空间基础设施物流优化问题表述，它同时考虑了基础设施子系统的内部相互作用及其与空间物流的外部协同效应。由于此拟议问题公式的完整版本可能在计算上令人望而却步，因此，通过改变空间物流网络上商品类型定义的粒度，可以开发出一种新的多保真度优化公式；这种多保真度公式可以有效地找到完整尺寸问题的近似解决方案，而对解决方案质量的牺牲很少。提出的问题公式和方法被应用于多任务探月活动中的现场资源利用系统的设计中，以证明其价值。