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2. Fission-fragment rocket - Wikipedia

   en.wikipedia.org/wiki/Fission-fragment_rocket

   The fission-fragment rocket is a rocket engine design that directly harnesses hot nuclear fission products for thrust, as opposed to using a separate fluid as working mass. The design can, in theory, produce very high specific impulse while still being well within the abilities of current technologies.

3. Theoretical spacecraft propulsion - Wikipedia

   en.wikipedia.org/wiki/Theoretical_spacecraft...

   The fission sail is a type of spacecraft propulsion proposed by Robert Forward that uses fission fragments to propel a large solar sail-like craft. It is similar in concept to the fission-fragment rocket in that the fission by-products are directly harnessed as working mass, and differs primarily in the way that the fragments are used for thrust.

4. Safe affordable fission engine - Wikipedia

   en.wikipedia.org/wiki/Safe_Affordable_Fission_Engine

   Safe affordable fission engine (SAFE) were NASA's small experimental nuclear fission reactors for electricity production in space. [1] Most known was the SAFE-400 reactor concept intended to produce 400 kW thermal and 100 kW electrical using a Brayton cycle closed-cycle gas turbine. [2] The fuel was uranium nitride in a core of 381 pins clad ...

5. Nuclear power in space - Wikipedia

   en.wikipedia.org/wiki/Nuclear_power_in_space

   The Kiwi-A Prime nuclear thermal rocket engine 1960 test at Jackass Flats, Nevada. Mars Curiosity rover powered by a RTG on Mars. White RTG with fins is visible at far side of rover. Nuclear power in space is the use of nuclear power in outer space, typically either small fission systems or radioactive decay for electricity or heat.

6. Nuclear Fission Has Been Damn Near Impossible to Find ... - AOL

   www.aol.com/lifestyle/nuclear-fission-damn-near...

   This fission occurs when atomic nuclei grab free neutrons and form heavy, but unstable, elements. When it comes to nuclear energy , human engineering and the rest of the universe are a bit at odds.

7. SpaceX launches “limitless” ‘zero fuel’ engine into space

   www.aol.com/spacex-launches-limitless-zero-fuel...

   SpaceX has launched a new type of zero-fuel propulsion system into orbit, which its creators claim will revolutionise the space industry.. The Quantum Drive engine, built by US startup IVO Ltd ...