The JLJ-51 reactor was a highly efficient reactor core developed by Eniam Nationalized Engineering. It was used in their JA-346 starfighters. It was light and compact, but had a high energy yield for its size. However, it was too small to support both a weapons system and a deflector shield system at the same time. JLJ stood for Johiklukkialoh Lohjohinik Jahkohklukk, which was Driyoin for Advanced Power System.