Low Enriched Uranium Fuels in NERVA Type Nuclear Thermal Rockets

摘要

In this study various parameters that allow the use of LEU fuels in an NTR have been characterized. The effect on the reactivity of the reactor by the ZrH content, implementation of (U,B)C fuel matrix, and the material used in the tie tubes have been studied. Promising results indicate that an LEU rocket based on the existing NERVA SNRE design is likely feasible with minimal modifications. Future work includes the exploration of alternative materials for the tie tubes and the finalization of a possible configuration for an LEU core.