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nuclear propulsion (445 words) |
 | A nuclear propulsion system derives its thrust from the products of nuclear fission or fusion, and was first seriously studied by Stanislaw Ulam and Frederick de Hoffman in 1944 as a spinoff of their work on the Manhattan Project. |
| One way to achieve nuclear propulsion is to heat a working fluid by pumping it through a nuclear reactor, then let the fluid expand through a nozzle. |
| With unlimited nuclear power, however, it is not necessary to react or burn anything; instead, hydrogen gas could simply be heated inside a nuclear reactor and then ejected as a high-speed exhaust. |
| Encyclopedia: Nuclear marine propulsion (1880 words) |
| Nuclear marine propulsion is propulsion of a Merchant ship powered by a nuclear reactor. |
| Work on nuclear marine propulsion started in the 1940s, and the first test reactor started up in the USA in 1953. |
| In contrast, nuclear propulsion has proven both technically and economically feasible in the Soviet Arctic. |
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