Rocket engine

RS-68

Also known as RS-68A

Rockets

Overview

A large LH2/LOX gas-generator engine developed for the Delta IV; designed for lower cost than the SSME, it powered the Delta IV and Delta IV Heavy cores.

Components & hardware

Propellants

LH2 / LOX

Powers

Delta IV Heavy

Knowledge connections

PowersDelta IV Heavy
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.