S-IV
Videos
The S-IV was the second stage of the Saturn I rocket used by NASA for early flights in the Apollo program.
Schematics of the S-IV
S IV 1
S IV 3
S IV 4
S-IVB
Videos
The S-IVB was the third stage on the Saturn V and second stage on the Saturn IB launch vehicles. Built by the Douglas Aircraft Company, it had one J-2 rocket engine. For lunar missions it was fired tw
S-IVB-206 which was used for the Skylab 2 flight
Cutaway drawing of the Saturn V S-IVB
Apollo 7 S-IVB in orbit over Cape Canaveral
Distant view of Apollo 7 S-IVB stage