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Engines. The booster engine consisted of two large thrust chambers. The Atlas A/B/C/D had a single turbopump assembly and gas generator driving both booster engines; the A/B/C had an interim engine with lower thrust while the D-series had the full-up engines delivering 303,000 pounds of thrust. [13]
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The first stage of the Atlas III discontinued the use of three engines and 1.5 staging in favor of a single Russian-built Energomash RD-180 engine, while retaining the stage's balloon tank construction.
The vernier engines, a trademark of Atlas vehicles, were designed to control the roll of the missile and trim its final flight velocity. The booster and vernier engines were all fed by liquid oxygen/RP-1 (kerosene) liquid propellant, and all engines were ignited at liftoff.
Apr 23, 2024 · To increase production speed in order to catch up to the Soviets, the Atlas made use of the MA-2 engine system originally produced for the cancelled Navaho cruise missile program. These same engines were also used in the Jupiter, Thor, and Redstone missiles.
The booster engines shut down due to missile tumbling and breakup of the Atlas occurred at T+126 seconds. The V-2 vernier shut down at T+109 seconds due to an apparent LOX duct rupture, while the V-1 vernier operated until final missile destruction.
The Atlas-B missile was the first version to include both the jettison-able booster engines, and the sustainer engine. At launch, all three engines would ignite. Later in the ascent, the two booster engines would shut down and drop away.
Jan 1, 2021 · Atlas missiles used five Rocketdyne engines; two LR89 boosters, a single LR105 sustainer engine, and two LR101 vernier engines that provided roll control and fine targeting.
