Editing Liquid-propellant rocket (section)

{{Short description|Rocket engine that uses liquid fuels and oxidizers}}
{{Distinguish|Rocket-powered aircraft}}
[[File:Liquid-Fuel Rocket Diagram.svg|thumb|300px|A simplified diagram of a liquid-propellant rocket.{{ordered list
 | list_style=margin-left:0;
 | item_style=list-style-position:inside;
 | [[Liquid rocket propellant|Liquid rocket fuel]].
 | [[Oxidizing agent|Oxidizer]].
 | Pumps carry the fuel and oxidizer.
 | The [[combustion chamber]] mixes and burns the two liquids.
 | Combustion product gasses enter the [[rocket engine nozzle |nozzle]] through a throat.
 | Exhaust exits the rocket.
}}]]
A '''liquid-propellant rocket''' or '''liquid rocket''' uses a [[rocket engine]] burning [[liquid rocket propellant|liquid propellants]]. (Alternate approaches use gaseous or [[Solid-propellant rocket |solid propellants]].) Liquids are desirable propellants because they have reasonably high density and their combustion products have high [[Specific impulse|specific impulse (''I''<sub>sp</sub>)]]. This allows the volume of the propellant tanks to be relatively low.