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TRW

Variable Thrust Engine

Designed for orbital maneuvering and planetary landings, the VTE is a child of the Apollo Lunar Module Descent Engine that landed Neil Armstrong and Buzz Aldrin on the moon, and saved the lives of the crew of Apollo 13. Variable Thrust Engine
Engine statistics
Specification
Applications Lunar Descent Module, Delta second stage
Propellants N2O4 and MMH
Thrust 130 to 1300? lbf
Isp in vacuum(s) Isp vs. % Thrust
Mixture Ratio 1.64
Weight 15 lbm
Chamber Pressure 100-11??? psia
Area Ratio 125:1
Engine Cycle ???
Pump Design Pressures ???