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The J-2, commonly known as Rocketdyne J-2, was a liquid-fuel cryogenic rocket engine used on NASA's Saturn IB and Saturn V launch vehicles. Built in the United States by Rocketdyne, the J-2 burned cryogenic liquid hydrogen (LH2) and liquid oxygen (LOX) propellants, with each engine producing 1,033.1 kN (232,250 lbf) of thrust in vacuum. The engine's…
History & Measurement
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Rocketdyne J-2 | Application | Upper stage engine | 1.00 | infobox |
| Rocketdyne J-2 | Associated LV | Saturn IB · Saturn V | 1.00 | infobox |
| Rocketdyne J-2 | Burn time | 500 seconds | 1.00 | infobox |
| Rocketdyne J-2 | Chamber pressure | 5,260 kPa (763 psi) | 1.00 | infobox |
| Rocketdyne J-2 | Country of origin | United States | 1.00 | infobox |
| Rocketdyne J-2 | Cycle | Gas generator | 1.00 | infobox |
| Rocketdyne J-2 | Designer | Marshall Space Flight Center · Rocketdyne | 1.00 | infobox |
| Rocketdyne J-2 | Diameter | 2.1 m (6.8 ft) | 1.00 | infobox |
| Rocketdyne J-2 | Dry mass | 1,788.1 kg (3,942 lb) | 1.00 | infobox |
| Rocketdyne J-2 | First flight | 26 February 1966 (1966-02-26) (AS-201) | 1.00 | infobox |
| Rocketdyne J-2 | Last flight | 15 July 1975 (1975-07-15) (ASTP) | 1.00 | infobox |
| Rocketdyne J-2 | Length | 3.4 m (11.1 ft) | 1.00 | infobox |
| Rocketdyne J-2 | Manufacturer | Rocketdyne | 1.00 | infobox |
| Rocketdyne J-2 | Mixture ratio | 5.5:1 | 1.00 | infobox |
| Rocketdyne J-2 | Notes | Data is for SA-208/SA-504 version. | 1.00 | infobox |
| Rocketdyne J-2 | Nozzle ratio | 27.5:1 | 1.00 | infobox |
| Rocketdyne J-2 | Propellant | Liquid oxygen / Liquid hydrogen | 1.00 | infobox |
| Rocketdyne J-2 | Specific impulse, sea-level | 200 s (2.0 km/s) | 1.00 | infobox |
| Rocketdyne J-2 | Specific impulse, vacuum | 421 s (4.13 km/s) | 1.00 | infobox |
| Rocketdyne J-2 | Status | Retired | 1.00 | infobox |
| Rocketdyne J-2 | Successor | HG-3 J-2X | 1.00 | infobox |
| Rocketdyne J-2 | Thrust, sea-level | 486.2 kN (109,302 lbf) | 1.00 | infobox |
| Rocketdyne J-2 | Thrust, vacuum | 1,033.1 kN (232,250 lbf) | 1.00 | infobox |
| Rocketdyne J-2 | Thrust-to-weight ratio | 73.18:1 | 1.00 | infobox |
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