Overview

A long-serving expander-cycle LH2/LOX upper-stage engine (first flown in the 1960s) that powers the Centaur and DCSS upper stages and continues on Vulcan Centaur.

Components & hardware

Propellants

LH2 / LOX

Powers

Atlas V

Delta IV Heavy

Vulcan Centaur

Knowledge connections

PowersAtlas V
PowersDelta IV Heavy
PowersVulcan Centaur
Uses propellantLH2 / LOX

Sources

The primary and reference sources this topic draws on.

NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.

RL10