Delta RL-10 stage series
Engine
Original archive entry. The text, images and links below are kept as they were written.
Second stages developed for the Delta 4 launch vehicle using the RL-10 Lox/LH2 engine. Different design from the Centaur series.
Subtopics
- Delta 3-2 LOx/LH2 propellant rocket stage. The upgraded cryogenic second-stage Pratt & Whitney RL10B-2 engine is based on the 30-year heritage of the reliable RL10 engine. It incorporates an extendable exit cone for increased specific impulse (Isp) and payload capability.
- Delta 4-2 LOx/LH2 propellant rocket stage. Delta 3 second stage with hydrogen tank stretch.
- Delta 4H-2 LOx/LH2 propellant rocket stage. Delta 4 second stage with hydrogen tank increased to 5.1 m diameter.