S-IV
 Schematics of the S-IV | |
| Manufacturer | Douglas |
|---|---|
| Country of origin | USA |
| Used on | Saturn I (stage 2) |
| General characteristics | |
| Height | 12.19 m (40 ft) |
| Diameter | 5.49 m (18 ft) |
| S-IV | |
| Powered by | 6 RL-10 engines |
| Maximum thrust | 600 kN |
| Burn time | ~410 seconds |
| Propellant | LOX/LH2 |
The S-IV was the second stage of the Saturn I, a rocket-powered launch vehicle used by NASA for early flights in the Apollo program.
The S-IV is similar to, but distinct from, the later S-IVB stage used on the Saturn IB and Saturn V rockets.
The S-IV stage was a large LOX/LH2-fueled rocket stage used for the early test flights of the Saturn I rocket. It formed the second stage of the Saturn I and was powered by a cluster of six RL-10 engines. The cryogenic LH2 (liquid hydrogen) and LOX (liquid oxygen) tanks were separated by a common bulkhead. The forward bulkhead of the LOX tank formed the aft bulkhead of the LH2 tank. This saved about ten tons of structural weight.
See also
References
NASA (1975). "Apollo Program Summary Report, Part 1" (PDF). {{cite web}}: Unknown parameter |month= ignored (help)