sustainer rocket engine

sustainer rocket engine

[sə′stān·ər ′räk·ət ‚en·jən]
(aerospace engineering)
A rocket engine that maintains the velocity of a rocket vehicle once it has achieved its programmed velocity by use of a booster or other engine.
References in periodicals archive ?
Test flights starting in 1957 and subsequent engineering tweaks led to tandem boosters and a central sustainer rocket engine that achieved 430,000 pounds of thrust.
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