Worlds of David Darling
Encyclopedia of Science
Home > Encyclopedia of Science


A monopropellant is a single liquid, used in a liquid-propellant rocket engine, that serves as both fuel and oxidizer. A monopropellant decomposes into a hot gas when an appropriate catalyst is introduced. The commonest example is hydrazine, often used in spacecraft attitude control jets. See also HAN (hydroxyl ammonium nitrate).

Related category