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astronautix.com LR-101-11
Government Designation: LR101-11. Designer: Rocketdyne. Propellants: Lox/Kerosene Thrust(vac): 540 kgf. Thrust(vac): 5.30 kN. Isp: 246 sec. Isp (sea level): 209 sec. Burn time: 283 sec. Mass Engine: 22 kg. Chambers: 1. Area Ratio: 5.60. Country: USA. Status: In Production.

The RS - 27 powerplant comprises an RS2701A/B main engine, and twin LR101 - NA - 11 verniers. Introduced in 1974 on the McDonnell Douglas' Delta 2000 series launcher it replaced the MB - 3 as the main system for that launcher. It completed it's Delta service on the 6000 model in 1992.

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Last update 12 March 2001.
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