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An exciting extension of these developments is the research into pulsed plasma rockets (PPRs). This newer approach utilizes controlled nuclear explosions to generate thrust while aiming for high thrust and high specific impulse. The concept involves superheating uranium pellets into plasma, expelled through an electromagnetic nozzle. Researchers, including Howie Industries, are working on engines capable of producing significant thrust and specific impulse levels far exceeding those of traditional rockets.
Support for PPR technology from NASA underscores its potential. Initial studies will focus on determining the feasibility of this approach for future applications, particularly for deep space missions.