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LR-101-11
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Manufacturer Name: RS-32. Government Designation: LR101-11. Designer: Rocketdyne. Propellants: Lox/Kerosene. Thrust(vac): 5.300 kN (1,191 lbf). Thrust(sl): 4.499 kN (1,011 lbf). Isp: 246 sec. Isp (sea level): 209 sec. Burn time: 283 sec. Mass Engine: 22 kg (48 lb). Chambers: 1. Area Ratio: 5.60. Thrust to Weight Ratio: 24.77. Country: USA. Status: In Production. First Flight: 1974. Last Flight: 1982. 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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