Saturn IB
Saturn IB Zoom

The Saturn IB is the follow-up to the Saturn I rocket, and it was designed to test the Apollo spacecraft in earth orbit. It is more powerful than the Saturn I, with an improved first stage (the new Saturn IB has uprated engines, and produces more thrust) and a new second stage. The S-IVB second stage uses just a single engine, the Rocketdyne J-2 - but this one engine provides 2.5 times the thrust of the six RL-10s found on the Saturn I's second stage. This rocket also has a Instrument Unit. This ring (in the photo above, the black band to the right of the red "USA" marking) was placed above the S-IVB second stage, and contained the inertial guidance equipment for the booster.

The Saturn IB was first launched on February 26, 1966, in unmanned mission AS-201. Though overshadowed by the mighty Saturn V, the Saturn IB also saw service in manned missions: Apollo 7 and the Skylab missions used Saturn IBs.

Saturn IB specifications and performance
Length 224 ft. Diameter 21 ft., 8 in.
Stage Stage name Engine(s) Propellant(s) Thrust
1 Saturn IB 8 Rocketdyne H-1B LOX, RP-1 1.64 million lbs.
2 Saturn IVB 1 Rocketdyne J-2 LOX, LH2 225,000 lbs.

Saturn IB H-1B engine detail
Saturn IB H-1B engine detail Zoom

On either side are the Saturn IB H-1B and J-2 engines. Like the Saturn IB itself, both of these engines are in the Kennedy Space Center Visitor Complex Rocket Garden.

Saturn IB J-2 engine detail
Saturn IB J-2 engine Zoom
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