{{Short description|Engines that remain on a rocket after rocket booster separation}} {{more citations needed|date=January 2021}} [[Image:STS-1 The Shuttle's Solid Rocket Boosters break away from Columbia's External Tank.jpg|thumb|After the two solid rocket boosters separate, the Space Shuttle's three Main Engines act as sustainers]] A '''sustainer engine''' is a rocket engine which remains with a spacecraft during its ascent after booster engines have separated from the spacecraft.<ref>{{cite web | url=https://www1.grc.nasa.gov/beginners-guide-to-aeronautics/stage/#parallel-staging | title=Rocket Staging }}</ref>
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== See also == *Multistage rocket
==References== {{Reflist}}
Category:Rocket engines
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