Descent Propulsion System

The Descent Propulsion System (DPS) or LMDE (Lunar Module Descent Engine) is a variable throttle hypergolic rocket engine developed by Space Technology Laboratories (TRW) for use in the Apollo Lunar Module Descent Stage. It used Aerozine 50 fuel and N2O4 oxidizer. This engine used a pintle injector, a design also used later in the SpaceX Merlin engine.

Descent Propulsion System

The Descent Propulsion System (DPS) or LMDE (Lunar Module Descent Engine) is a variable throttle hypergolic rocket engine developed by Space Technology Laboratories (TRW) for use in the Apollo Lunar Module Descent Stage. It used Aerozine 50 fuel and N2O4 oxidizer. This engine used a pintle injector, a design also used later in the SpaceX Merlin engine.