What is Rocket fuel?
'''Rocket propellant''' or rocket fuel means [[fuel]] for [[rocket]]s. It may be in the form of [[solid]], [[liquid]] or [[gas]]. Most rockets are chemical rockets propelled by [[fire]]. Most chemical rockets use two propellants: a fuel and an [[Oxidizing agent|oxidizer]]. These two chemicals are sometimes mixed, and sometimes kept in separate containers. The [[Space Shuttle]] had solid fuel boosters with powdered [[aluminium]] as fuel and [[ammonium perchlorate]] as oxidant.<ref>{{cite web|url=https://science.ksc.nasa.gov/shuttle/technology/sts-newsref/srb.html|title=SOLID ROCKET BOOSTERS|website=science.ksc.nasa.gov|access-date=2018-07-25|archive-date=2017-05-11|archive-url=https://archive.today/20170511231919/https://science.ksc.nasa.gov/shuttle/technology/sts-newsref/srb.html|url-status=dead}}</ref> The Space Shuttle main engines used liquid [[hydrogen]] as fuel and liquid [[oxygen]] as oxidant.<ref>{{cite web|url=https://science.ksc.nasa.gov/shuttle/technology/sts-newsref/sts-mps.html#sts-mps-ssme|title=MAIN PROPULSION SYSTEM|website=science.ksc.nasa.gov|access-date=2018-07-25|archive-date=2018-12-27|archive-url=https://web.archive.org/web/20181227182843/http://science.ksc.nasa.gov/shuttle/technology/sts-newsref/sts-mps.html#sts-mps-ssme|url-status=dead}}</ref> A toy [[water rocket]] uses a gas, such as [[compressed air]], as a propellant. ==References== {{reflist}} [[Category:Fuel]] [[Category:Rockets]]