Source: wikibot/gas-core-reactor-rocket
= Gas core reactor rocket
{wiki=Gas_core_reactor_rocket}
A gas core reactor rocket (GCRR) is a type of nuclear thermal rocket that uses a nuclear reactor to heat a propellant gas, which is then expelled to produce thrust. In a gas core reactor, the nuclear fission reaction occurs within a core that is in a gaseous state, usually involving uranium or another fissile material.