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Bimodal Nuclear Thermal Rocket Analysis DevelopmentsNuclear thermal propulsion has long been considered an enabling technology for human missions to Mars and beyond. One concept of operations for these missions utilizes the nuclear reactor to generate electrical power during coast phases, known as bimodal operation. This presentation focuses on the systems modeling and analysis efforts for a NERVA derived concept. The NERVA bimodal operation derives the thermal energy from the core tie tube elements. Recent analysis has shown potential temperature distributions in the tie tube elements that may limit the thermodynamic efficiency of the closed Brayton cycle used to generate electricity with the current design. The results of this analysis are discussed as well as the potential implications to a bimodal NERVA type reactor.
Document ID
20140016833
Document Type
Presentation
Authors
Belair, Michael
(NASA Glenn Research Center Cleveland, OH United States)
Lavelle, Thomas
(NASA Glenn Research Center Cleveland, OH United States)
Saimento, Charles
(NASA Glenn Research Center Cleveland, OH United States)
Juhasz, Albert
(NASA Glenn Research Center Cleveland, OH United States)
Stewart, Mark
(Vantage Partners, LLC Brook Park, OH, United States)
Date Acquired
December 2, 2014
Publication Date
July 28, 2014
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
GRC-E-DAA-TN16649
Meeting Information
AIAA/ASME/SAE/ASEE Joint Propulsion Conference(Cleveland Medical Mart & Convention Center, Cleveland, OH)
Funding Number(s)
CONTRACT_GRANT: NNC12BA01B
WBS: WBS 279585.01.99.99.99.99.22
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Nuclear rocket engines
Nuclear engine for Rocket vehicles
turbomachinery
rocket engine design
cermets

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