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Nuclear Thermal Rocket Simulation in NPSSFour nuclear thermal rocket (NTR) models have been created in the Numerical Propulsion System Simulation (NPSS) framework. The models are divided into two categories. One set is based upon the ZrC-graphite composite fuel element and tie tube-style reactor developed during the Nuclear Engine for Rocket Vehicle Application (NERVA) project in the late 1960s and early 1970s. The other reactor set is based upon a W-UO2 ceramic- metallic (CERMET) fuel element. Within each category, a small and a large thrust engine are modeled. The small engine models utilize RL-10 turbomachinery performance maps and have a thrust of approximately 33.4 kN (7,500 lbf ). The large engine models utilize scaled RL-60 turbomachinery performance maps and have a thrust of approximately 111.2 kN (25,000 lbf ). Power deposition profiles for each reactor were obtained from a detailed Monte Carlo N-Particle (MCNP5) model of the reactor cores. Performance factors such as thermodynamic state points, thrust, specific impulse, reactor power level, and maximum fuel temperature are analyzed for each engine design.
Document ID
20140006199
Document Type
Technical Memorandum (TM)
Authors
Belair, Michael L. (NASA Glenn Research Center Cleveland, OH, United States)
Sarmiento, Charles J. (NASA Glenn Research Center Cleveland, OH, United States)
Lavelle, Thomas L. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
May 23, 2014
Publication Date
July 1, 2013
Subject Category
Spacecraft Propulsion and Power
Report/Patent Number
E-18728
GRC-E-DAA-TN9910
NASA/TM-2013-216553
Meeting Information
Joint Propulsion Conference and Exhibit(San Jose, CA)
Funding Number(s)
WBS: WBS 279585.04.01.22
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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