Heatpipe Power System (HPS) In-Space Fueling, A Simplified Approach

A major objection to the use of nuclear energy for space applications is the perceived risk involved in the launching of a fully fueled nuclear reactor. Even when it is pointed out that the fuel is in fact not radioactive, concerns persist. It is acknowledged that to design a reactor able to withstand all conceivable launch accidents would result in an impractical heavy design. To avoid the above problem and to put to rest any concerns, it is proposed that the reactor be launched without fuel or partially fueled to avoid any possibility of the reactor attaining criticality in the event of a launch accident. This SBIR proposal describes an innovative approach to permit the reactor to be fueled in space in a simple operation.