Optimization of Refueling Strategies for Electric Propulsion Space Missions

What is it about?

This paper explores how in-space refueling can dramatically improve space missions that use electric propulsion. We developed a mathematical model showing that strategic refueling can significantly increase payload capacity and mission flexibility. By analyzing the SMART-1 lunar mission as a case study, we found that adding just three refueling stops could increase payload capacity by over 300% while only extending mission duration by 8%. Furthermore, we demonstrated that lower-powered thrusters become more advantageous when refueling is available, potentially transforming spacecraft design practices.

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