RS-68
Videos
The RS-68 was a liquid-fuel rocket engine that used liquid hydrogen and liquid oxygen as propellants in a gas-generator cycle. It was the largest hydrogen-fueled rocket engine ever flown.
An RS-68 engine undergoing hot-fire testing at NASA's Stennis Space Center during its developmental phase.
RS-68A engines of Delta IV Heavy's Common Booster Cores.
Delta IV
Videos
Delta IV was a group of five expendable launch systems in the Delta rocket family. It flew 45 missions from 2002 to 2024. Originally designed by Boeing's Defense, Space and Security division for the E
RS-68
…Whitney Rocketdyne and Aerojet Rocketdyne). Development started in the 1990s with the goal of producing a simpler, less costly, heavy-lift engine for the Delta IV launch system. Two versions of the engine have been produced: the original RS-68 and the improved RS-68A. A third version, the RS-68B, was planned for…
Delta IV Medium launch carrying DSCS III-B6.
Delta IV Heavy launching
Delta IV 4-meter Cryogenic Second Stage
First Delta IV Heavy with three CBCs prior to launch