The Apollo 10 S-IC stage is hoisted in the VAB for stacking
|Height||42 m (138 ft)|
|Diameter||10 m (33 ft)|
|Mass|| 2,280,000 kg|
|Engines||5 F-1 engines|
|Thrust|| 33,400 kN|
|Burn time||150 s|
|Fuel||RP-1 and liquid oxygen|
The S-IC (pronounced "ess one see") was the first stage of the Saturn V rocket. The S-IC first stage was built by The Boeing Company. Like the first stages of most rockets, most of its mass of over two thousand metric tonnes at launch was propellant, in this case RP-1 rocket fuel and liquid oxygen oxidizer. It was 42 meters tall and 10 meters in diameter, and provided 33,000 kN of thrust to get the rocket through the first 61 kilometers of ascent. Of the five F-1 engines, one was fixed in the center, while the four on the outer ring could be hydraulically turned to control the rocket.
MSFC built the first three test stages (S-IC-T, the S-IC-S, and the S-IC-F) and the first two flight models (S-IC-1 and -2). They were built using tools produced in Wichita.
It took roughly 7 to 9 months to build the tanks and 14 months to complete a stage. The first stage built by Boeing was S-IC-D, a test model.
Above the thrust structure was the fuel tank, containing 770,000 liters of RP-1 fuel. The tank itself had a mass of 11 metric tons dry and could release 7300 liters per second. Nitrogen was bubbled through the tank before launch to keep the fuel mixed. During flight the fuel was pressurized using helium, that was stored in tanks in the liquid oxygen tank above.
Between the fuel and liquid oxygen tanks was the intertank.
The liquid oxygen tank held 1,204,000 liters of LOX. It raised special issues for the designer. The lines through which the LOX ran to the engine had to be straight and therefore had to pass through the fuel tank. This meant insulating these lines inside a tunnel to stop fuel freezing to the outside and also meant five extra holes in the top of the fuel tank.
|Serial number||Use||Launch date||Current location||Notes|
|S-IC-T||static test firing||part of Saturn V display at Kennedy Space Center|
|S-IC-S||structural load testing (had no engines)||location unknown (last seen at MSFC)|
|S-IC-F||facilities testing for checking out launch complex assembly buildings and launch equipment||location unknown|
|S-IC-D||ground test dynamics model||U.S. Space & Rocket Center, Huntsville, Alabama|
|S-IC-1||Apollo 4||November 9, 1967||Manufactured by MSFC|
|S-IC-2||Apollo 6||April 4, 1968||Manufactured by MSFC; carried TV and cameras on Boattail and Forward skirt|
|S-IC-3||Apollo 8||December 21, 1968||Manufactured by Boeing (as with all subsequent stages); weighed 560 kg less than previous allowing 36 kg more payload|
|S-IC-4||Apollo 9||March 3, 1969|
|S-IC-5||Apollo 10||May 18, 1969||Last flight for S-IC R&D Instrumentation|
|S-IC-6||Apollo 11||July 16, 1969|
|S-IC-7||Apollo 12||November 14, 1969|
|S-IC-8||Apollo 13||April 11, 1970|
|S-IC-9||Apollo 14||January 31, 1971|
|S-IC-10||Apollo 15||July 26, 1971|
|S-IC-11||Apollo 16||April 16, 1972|
|S-IC-12||Apollo 17||December 7, 1972|
|S-IC-13||Skylab 1||May 14, 1973||engine shutoff changed to 1-2-2 from 1-4 to lessen loads on Apollo Telescope Mount|
|S-IC-14||Unused||Saturn V display at Johnson Space Center||Scheduled for Apollo 18/19|
|S-IC-15||Unused||Michoud Assembly Facility||Designated but never used as a backup Skylab launch vehicle|