nuclear propulsion
Noun: A method of generating thrust or motive power for vehicles, particularly in marine and aerospace applications, that utilizes the energy released from nuclear reactions. This is achieved either by using a nuclear reactor to produce electricity that powers an electric motor or turbine, or by using reactor heat to directly energize a propellant fluid.
This term is a technical compound noun used primarily in engineering, physics, and military contexts to describe a specific propulsion technology. * The development of nuclear propulsion extended the submerged endurance of submarines from days to months. * Scientists are researching nuclear propulsion for potential crewed missions to Mars due to its high efficiency. * The aircraft carrier is powered by nuclear propulsion, which eliminates the need for frequent refueling.
- "Nuclear-thermal propulsion": A specific type where a nuclear reactor heats a propellant like liquid hydrogen, which then expands through a nozzle to create thrust. This is a primary concept for advanced space travel.
- "Nuclear-electric propulsion": A type where a nuclear reactor generates electricity, which is then used to power an ion thruster or plasma thruster. This offers very high fuel efficiency for long-duration space missions.
- Nuclear-powered (adj): Describing a vehicle or system that uses nuclear propulsion (e.g., a submarine).
- Propulsion (n): The general act or process of driving something forward.
- Reactor (n): The device in which the nuclear fission reaction is controlled to produce energy.
- Atomic propulsion (less common, largely historical)
- Nuclear engine: The engine unit that converts nuclear energy into thrust.
- Nuclear rocket: A rocket vehicle that employs nuclear-thermal or nuclear-electric propulsion.
- the use of a nuclear reactor either to produce electricity to power an engine (as in a nuclear submarine) or to directly heat a propellant (as in nuclear rockets)