Nuclear rocket

Nuclear propulsion includes a wide variety of propulsion methods that fulfill the promise of the Atomic Age by using some form of nuclear reaction as their primary power source. The idea of using nuclear material for propulsion dates back to the beginning of the 20th century. In 1903 it was hypothesised that radioactive material, radium, might be a suitable fuel for engines to propel cars, boats, and planes.H. G. Wells picked up this idea in his 1914 fiction work The World Set Free.

Nuclear-powered vessels are mainly military submarines, and aircraft carriers. Russia is the only country that currently has nuclear-powered civilian surface ships, most are icebreakers but one is a container ship. They use nuclear reactors as their power plants. For more detailed articles see:

Russia's Channel One Television news broadcast a picture and details of a nuclear-powered torpedo called Status-6 on about 12 November 2015. The torpedo was stated as having a range of up to 10,000 km, a cruising speed of 100 knots, and operational depth of up to 1000 metres below the surface. The torpedo carried a 100-megaton nuclear warhead.

One of the suggestions emerging in the summer of 1958 from the first meeting of the scientific advisory group that became JASON was for "a nuclear-powered torpedo that could roam the seas almost indefinitely".

Research into nuclear-powered aircraft was pursued during the Cold War by the United States and the Soviet Union as they would presumably allow a country to keep nuclear bombers in the air for extremely long periods of time, a useful tactic for nuclear deterrence. Neither country created any operational nuclear aircraft. One design problem, never adequately solved, was the need for heavy shielding to protect the crew from radiation sickness. Since the advent of ICBMs in the 1960s the tactical advantage of such aircraft was greatly diminished and respective projects were cancelled. Because the technology was inherently dangerous it was not considered in non-military contexts.

...
Wikipedia