Specifically, a gradient function lattice cermet fuel structure with a shape corresponding to a mathematically based periodic solid in NTP applications.

摘要

The nuclear-powered nuclear fission reactor structure comprises an active core region comprising a fuel element structure, a reflector having a rotatable neutron absorber structure (e.g., a drum absorber, etc.), and a core former that conformally couples an outer surface of the fuel element structure to the reflector. have The fuel element structure is arranged adjacent the nearest neighboring fuel element structure in the three pitch design. The cladding body defining the coolant channels is inserted and joined to the lower and upper core plates from the continuous structure that is the first part of the containment structure. A nuclear powered fission reactor structure may be integrated into a nuclear thermal propulsion engine for propulsion applications such as space propulsion.