Q11229642: Difference between revisions

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Q11229642
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{{Page|LR-91|Classes|rocket engine used on the second stages of Titan rockets}}
{{Page|LR-91|Classes|rocket engine used on the second stages of Titan rockets|Aerojet LR-91, Aerojet LR91, LR91}}

Revision as of 15:50, 17 February 2025




The LR91 was an American liquid-propellant rocket engine, which was used on the second stages of Titan intercontinental ballistic missiles and launch vehicles. While the original version - the LR91-3 - ran on RP-1/LOX (as did the companion LR87-3) on the Titan I, the models that propelled the Titan II and later were switched to Aerozine 50/N2O4.