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Hybrid Fuel Coupling in a Pulsed Z-Pinch Rocket EngineThe work presented here sought to explore a portion of the parameter space of a hybrid nuclear fuel in regards to ignition and burn by analyzing the effect of initial geometry and thermodynamic conditions. The authors performed 0D power balance and 1D burn wave calculations to determine temperature progression and energy production for defined initial conditions. Geometries examined are representative of concept fuels for a Pulsed Fission-Fusion (PuFF) engine. This work focuses on lithium deuteride and uranium 235 for the fuel since these are seen as leading candidates for PuFF. Presented below is a power balance illustrating a reduction in the energy and density required to breakeven of hybrid fuels in comparison with fusion fuels. Also the impact of fusion and fissile fuel quantities upon initial energies is presented. One can see that the initial energy required to breakeven in a hybrid cylindrical nuclear fuel decreases with decreasing fissile liner thickness, decreasing fusion fuel core radius, and increasing compression ratio of the fusion fuel.
Document ID
Document Type
Conference Paper
Taylor, Brian (NASA Marshall Space Flight Center Huntsville, AL, United States)
Cassibry, Jason (Alabama Univ. Huntsville, AL, United States)
Adams, Robert (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
February 14, 2019
Publication Date
February 25, 2019
Subject Category
Spacecraft Propulsion and Power
Report/Patent Number
Meeting Information
Nuclear and Emerging Technologies for Space 2019(Richland, WA)
Distribution Limits
Public Use Permitted.

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NameType 20190000723.pdf STI

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IDRelationTitle20190002106See AlsoHybrid Fuel Coupling in a Pulsed Z-Pinch Rocket Engine