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TheSaturn IB-CE rocket was a variant of theSaturn IB rocket studied in 1965 byDouglas.[1] However unlike the Saturn IB the Saturn IB-CE was to be a three-stage rocket. The IB-CE used the same configuration as the Saturn IB for the first two stages however with the addition of aCentaur D/E rocket as the third stage.[1][2] It was to be capable of delivering 22,000 kg to low Earth orbit and 5,590 kg into a translunar trajectory.[1]
Although this version never flew, a similar[citation needed] rocket, theTitan IIIE, built primarily for theU.S. Air Force, but launching a few NASA payloads, including theViking andVoyager spacecraft, had the same equivalent thrust as the Saturn IB-CE.
| Early proposals |  | |
|---|---|---|
| "C" series | ||
| Saturn I series | ||
| Saturn II series | ||
| Saturn V series | ||