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Particle bed reactor nuclear rocket conceptThe particle bed reactor nuclear rocket concept consists of fuel particles (in this case (U,Zr)C with an outer coat of zirconium carbide). These particles are packed in an annular bed surrounded by two frits (porous tubes) forming a fuel element; the outer one being a cold frit, the inner one being a hot frit. The fuel element are cooled by hydrogen passing in through the moderator. These elements are assembled in a reactor assembly in a hexagonal pattern. The reactor can be either reflected or not, depending on the design, and either 19 or 37 elements, are used. Propellant enters in the top, passes through the moderator fuel element and out through the nozzle. Beryllium used for the moderator in this particular design to withstand the high radiation exposure implied by the long run times.
Document ID
19920001877
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ludewig, Hans (Brookhaven National Lab. Upton, NY, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1991
Publication Information
Publication: NASA. Lewis Research Center, Nuclear Thermal Propulsion: A Joint NASA(DOE)DOD Workshop
Subject Category
Spacecraft Propulsion And Power
Accession Number
92N11095
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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