A reliability and mass perspective of SP-100 Stirling cycle lunar-base powerplant designs

Physics

Scientific paper

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Design Analysis, Nuclear Reactors, Reactor Design, Reliability Analysis, Space Power Reactors, Stirling Cycle, Criteria, Lunar Bases, Redundancy, Weight Reduction

Scientific paper

The purpose was to obtain reliability and mass perspectives on selection of space power system conceptual designs based on SP-100 reactor and Stirling cycle power-generation subsystems. The approach taken was to: (1) develop a criterion for an acceptable overall reliability risk as a function of the expected range of emerging technology subsystem unit reliabilities; (2) conduct reliability and mass analyses for a diverse matrix of 800-kWe lunar-base design configurations employing single and multiple powerplants with both full and partial subsystem redundancy combinations; and (3) derive reliability and mass perspectives on selection of conceptual design configurations that meet an acceptable reliability criterion with the minimum system mass increase relative to reference powerplant design. The developed perspectives provided valuable insight into the considerations required to identify and characterize high-reliability and low-mass lunar-base powerplant conceptual design.

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