A Modeling Framework for Space Logistics
- Paper number
IAC-07-D3.1.08
- Author
Ms. Erica Gralla, Massachussets Institute of Technology (MIT), United States
- Coauthor
Ms. Sarah Shull, Massachussets Institute of Technology (MIT), United States
- Coauthor
Dr. Olivier de Weck, Massachussets Institute of Technology (MIT), United States
- Year
2007
- Abstract
As NASA looks ahead to next-generation human space exploration, it is essential to consider the cost of operations and support in order to ensure the development of affordable programs. The life-cycle costs of future exploration ventures can be reduced by focusing on the interplanetary logistics strategy. By leveraging proven supply chain management techniques from the military and commercial sectors and applying them to the unique challenges of human space exploration, space logistics can be streamlined, and mission affordability and robustness can be increased.
This paper describes a modeling framework for space logistics which enables description, evaluation, and optimization of various types of logistics strategies. The framework is embodied in SpaceNet, a discrete event simulation and optimization software program. Results are provided for several trade studies, including missions to the International Space Station and to the moon.
More specifically, the modeling framework includes a comprehensive description of the logistics tradespace based on the following components:
- a network of nodes and arcs
- a set of comprehensive supply classes and demand models
- a predefined set of available spacecraft elements
- a small set of processes describing movement through the network
With this small set of components the entire tradespace of logistics architectures can be modeled. The framework enables studies that can answer questions such as the following:
- What is the best method for shipping cargo and supplies for an exploration mission?
- What cargo and supplies are needed for an exploration mission?
- Is an in-space fuel depot advantageous? Where should it be located?
- Is in-situ resource utilization a useful strategy?
The paper provides results for several such studies. However, the modeling framework described can be used to model nearly any space logistics scenario, in order to enable strategic planning for many types of future space missions.
- Abstract document