Saturn 1 Geneology Credit - © Mark Wade

The configurations shown were the most promising. The best solution was to add two or four UA1205 five segment solid rocket motors already developed for the Titan launch vehicle. This would boost payload to 40,000 kg. Use of seven segment motors developed for Titan 3M would bring the payload up to 48,000 kg but would require stretching the S-1B first stage by 20 feet. A more modest ten foot stretch, with Minuteman first stage motors for thrust augmentation, would bring a modest payload improvement to 23,000 kg.

In the end, no further orders for Saturns were placed. Of the 12 Saturn IB's built, only nine were flown, the remaining three becoming NASA museum pieces. If Saturn production had continued, it is likely the Saturn IB would have been discontinued anyway, and Saturn II variants would have been used for any intermediate payload requirements.

	Saturn I RIFT	In the first half of the 1960's it was planned to make suborbital tests of nuclear propulsion for upper stages using a Saturn IB first stage to boost a Rover-reactor...more.
	Saturn I	'Cluster's last stand' - 8 Redstone tanks around Jupiter tank core, eight Jupiter engines. Intended as launch vehicle for Apollo CM circumlunar flights. Developed...more.
	Saturn IB-CE	Douglas Studies, 1965: Standard Saturn IB with Centaur upper stage....more.
	Saturn IB-A	Douglas Studies, 1965: S-IB with 225 k lbf H-1's; S-IVB stretched with 350,000 lbs propellants; Centaur third stage....more.
	Saturn IB-B	Douglas Studies, 1965: S-IB with 225 k lbf H-1's; S-IVB stretched with 350,000 lbs propellants and HG-3 high performance engine....more.
	Saturn IB-C	Douglas Studies, 1965: 4 Minuteman strap-ons; standard S-IB, S-IVB stages....more.
	Saturn IB-D	Douglas Studies, 1965: Standard Saturn IB with Titan UA1205 5-segment strap-on motors....more.
	Saturn INT-05	NASA Study, 1965: Half length 260 inch solid motor with S-IVB upper stage....more.
	Saturn INT-05A	UA Study, 1965: Full length 260 inch solid motor with S-IVB upper stage....more.
	Saturn IB	Improved Saturn I, with uprated first stage and Saturn IVB second stage (common with Saturn V) replacing Saturn IV. Used for earth orbit flight tests of Apollo CSM and LM....more.
	Saturn INT-11	Chrysler Studies, 1966: S-IB with 4 Titan UA1205 with standard S-IB stage, S-IVB stage, or 4 Titan UA1207 strap-ons with 20-foot stretche S-IB stage, S-IVB stage. S-IB ignition at altitude....more.
	Saturn INT-12	Chrysler Studies, 1966: S-IB with only 4 H-1 motors, with 4 Titan UA1205 with standard length S-IB stage, S-IVB stage, or 4 Titan UA1207 strap-ons with 20-foot...more.
	Saturn INT-13	Chrysler Studies, 1966: S-IB with 2 Titan UA1205 with standard length S-IB stage, S-IVB stage, or 2 Titan UA1207 strap-ons with 20-foot stretche S-IB stage, S-IVB...more.
	Saturn INT-14	Chrysler Studies, 1966: S-IB with 4 Minuteman motors as strap-ons, with no, 10, or 20-foot stretch S-IB stages, S-IVB stage. S-IB ignition at sea level at same time as strap-ons....more.
	Saturn INT-15	Chrysler Studies, 1966: S-IB with 8 Minuteman motors as strap-ons, with no, 10, or 20-foot stretch S-IB stages, S-IVB stage. S-IB ignition at sea level at same time as strap-ons....more.
	Saturn INT-16	UA Studies, 1966: S-IVB upper stage with from 2 to 5 Titan UA1205, 1206, or 1207 motors as first stage, clustered around from 1 to 3 of the same motors as a second stage. S-IVB upper stage....more.
	Saturn INT-27	UA study, 1965. Saturn variant using various combinations of 156 inch rocket motors as first and second stages, with S-IVB upper stage....more.
	Saturn LCB-Alumizine-140	Boeing Low-Cost Saturn Derivative Study, 1967 (trade study of 260 inch first stages for S-IVB, all delivering 86,000 lb pyld to LEO): Low Cost Booster, Single Pressure-fed...more.
	Saturn LCB-Alumizine-250	Boeing Low-Cost Saturn Derivative Study, 1967 (trade study of 260 inch first stages for S-IVB, all delivering 86,000 lb pyld to LEO): Low Cost Booster, Single Pressure-fed...more.
	Saturn LCB-Lox/RP-1	Boeing Low-Cost Saturn Derivative Study, 1967 (trade study of 260 inch first stages for S-IVB, all delivering 86,000 lb pyld to LEO): Low Cost Booster, Single Pressure-fed Lox/RFP-1 engine....more.
	Saturn LCB-SR	Boeing Low-Cost Saturn Derivative Study, 1967 (trade study of 260 inch first stages for S-IVB, all delivering 86,000 lb pyld to LEO): Low Cost Booster, 260 inch solid motor, full length....more.
	Saturn LCB-Storable-140	Boeing Low-Cost Saturn Derivative Study, 1967 (trade study of 260 inch first stages for S-IVB, all delivering 86,000 lb pyld to LEO): Low Cost Booster, Single Pressure-fed...more.
	Saturn LCB-Storable-250	Boeing Low-Cost Saturn Derivative Study, 1967 (trade study of 260 inch first stages for S-IVB, all delivering 86,000 lb pyld to LEO): Low Cost Booster, Single Pressure-fed...more.
	Saturn S-IC-TLB	Boeing Low-Cost Saturn Derivative Study, 1967 (trade study of 260 inch first stages for S-IVB, all delivering 86,000 lb pyld to LEO): S-IC Technology Liquid Booster:...more.