Noun
chemical rocket (plural chemical rockets)
(astronautics) a rocket that uses a chemical reaction of its propellants to generate its gaseous exhaust
For a chemical rocket the propellant mass therefore would include both fuel and oxidizer ; for air-breathing engines only the mass of the fuel is counted, not the mass of air passing through the engine. Source: Internet
Even a trip to the Moon is long enough for an electric propulsion system to outrun a chemical rocket – the Apollo missions took 3 days in each direction. Source: Internet
This was essentially an ordinary chemical rocket with the nuclear reaction replacing chemical combustion as the rocket's heat source. Source: Internet
It uses ion thrusters in combination with swing-bys to get to Mercury, where a chemical rocket will complete orbit insertion. Source: Internet