Nuclear Thermal Rocket Engines
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Nov1-04, 08:15 PM
What I'm interested in is thrust-augmented nuclear thermal rocket engines. They inject liquid oxygen in the nozzle after the hydrogen has passed the reactor, and combustion takes place. It gives a big blow to its Isp, but it produces more thrust.
Why would you need more thrust when you're in space? Fuel efficiency is the be-all-and-end-all in space.