Guest: Dr. James A. Dewar. Dr. James Dewar returned to The Space Show to explain and discuss nuclear rockets and what they would mean for space and economic development were they to be used to obtain low cost space access. Dr. Dewar began our discussion with a good explanation of how a nuclear rocket engine works and the advantages such an engine provides in terms of specific impulse. 

Graphite/Tri-carbide core fuel type element, metallic encasement proponent. Dr. Dewar always comes up with practical explanations when asked about NTR vs. space elevator this only comes with years of experience in NERVA project admin. 

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