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S-IVB Second stage

S-IVB stage is the improved S-IV stage from Saturn I for Saturn V. S-IVB stage for Saturn IB is developed by modify Saturn V S-IVB.
  • Diameter : 21ft 7in (6.6m)
  • Height : 58ft 4in (17.78m)
  • Weight(dry) : 23000lb (10.43ton)
  • Weight(loaded) : 253000lb(114.76ton)
  • Burn time : 7.5min approx.
  • Manufacturer :McDonnell Douglas Astronautics Co. Huntington Beach, Calif.
KSC-68P-127 April 9, 1968 The second stage (S-IVB) of the Saturn 205 vehicle, to be used in the first manned Apollo flight, arrived aboard the Super Guppy, Sunday, April 7.
67-HC-26 January 23, 1967 S-IVB stage originally intended for Apollo/Saturn-206 unmanned lunar module test mission is seen during mating at Complex 37.  Saturn IB 206 would not fly for six years, when the vehicle would be used for the Skylab 2 mission Karlheinz Rohrwild

Fundamentally, systems were same as S-IVB 500 series used for Saturn V. In appearance, the form of Auxiliary Propulsion System is different. And, the number of the sphere helium tank being installed around the J2 engine was fewer.

Aft Interstage Assembly


Apollo Saturn IB S-IVB Aft Interstage Assembly
This is composed of the panel of stringer-stiffened aluminum skin panels. When S-1B jettison from S-IVB, Aft Interstage remain with S-1B. Then four retrorockets located on Aft Interstage were used for separate between S-1B and S-IVB.


Look Saturn V S-IVB page for more information. Saturn V S-IVB Third Stage