The Pulsed Plasma Rocket concept. A system that may produce 20,000 lbsf of thrust with an Isp of 5,000 s. The system is derived from the Pulsed Fission Fusion concept but the Pulsed Plasma Rocket (PPR) is smaller, less complex, and more affordable.
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A nuclear thermal rocket for manned exploration of Mars, the Moon, or space colonization.
Water based propulsion for CubeSats providing orbit insertion, station keeping for 10 years, and eventual deorbit.
Low cost, rapid debris de-orbiting for less than $3k per kilogram of removed mass from Earth orbit.
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