Gas Core Reactor Rocket
Gas core reactor rockets are a conceptual type of rocket that is propelled by the exhausted coolant of a gaseous fission reactor. The nuclear fission reactor core may be either a gas or plasma. They may be capable of creating specific impulses of 3,000–5,000 s (30 to 50 kN·s/kg, effective exhaust velocities 30 to 50 km/s) and thrust which is enough for relatively fast interplanetary travel. Heat transfer to the working fluid (propellant) is by thermal radiation, mostly in the ultraviolet, given off by the fission gas at a working temperature of around 25,000 °C.
Read more about Gas Core Reactor Rocket: Theory of Operation, General Features of The Nuclear Reactor, Open Cycle Versus Closed Cycle, Magnetic Confinement, Impact of Rocket Acceleration, Neutronic Considerations, Technology Summary and Outlook
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