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- HG-3_(rocket_engine) abstract "The HG-3 was a liquid-fuel cryogenic rocket engine which was designed for use on the upper stages of Saturn rockets in the post-Apollo era. Designed in the United States of America by Rocketdyne, the HG-3 would have burned cryogenic liquid hydrogen & liquid oxygen propellants, with each engine producing 1,400.7 kN (315,000 lbf) of thrust during flight. The engine was designed to produce a specific impulse (Isp) of 451 seconds in a vacuum, or 280 seconds at sea level. Developed from Rocketdyne's J-2 engine used on the S-II and S-IVB stages, the engine was intended to replace the J-2 on the upgraded S-II-2 and S-IVB-2 stages intended for use on the Saturn MLV, Saturn IB-B and Saturn V/4-260 rockets, with a sea-level optimised version, the HG-3-SL, intended for use on the Saturn INT-17. The engine was cancelled, however, during the post-Apollo drawdown when development of the more advanced Saturn rockets ceased, and never flew, although the engine was later used as the basis for the design of the RS-25 Space Shuttle Main Engine.".
- HG-3_(rocket_engine) wikiPageID "34785687".
- HG-3_(rocket_engine) wikiPageRevisionID "571298022".
- HG-3_(rocket_engine) associated Saturn_IB-B.
- HG-3_(rocket_engine) associated Saturn_II.
- HG-3_(rocket_engine) associated Saturn_MLV.
- HG-3_(rocket_engine) associated 4-260.
- HG-3_(rocket_engine) countryOfOrigin United_States.
- HG-3_(rocket_engine) designer Marshall_Space_Flight_Center.
- HG-3_(rocket_engine) designer Rocketdyne.
- HG-3_(rocket_engine) fuel Liquid_hydrogen.
- HG-3_(rocket_engine) hasPhotoCollection HG-3_(rocket_engine).
- HG-3_(rocket_engine) manufacturer Rocketdyne.
- HG-3_(rocket_engine) name "HG-3".
- HG-3_(rocket_engine) oxidiser Liquid_oxygen.
- HG-3_(rocket_engine) predecessor Rocketdyne_J-2.
- HG-3_(rocket_engine) purpose "Upper stage engine".
- HG-3_(rocket_engine) specificImpulseSeaLevel "280.0".
- HG-3_(rocket_engine) specificImpulseVacuum "451.0".
- HG-3_(rocket_engine) status "Cancelled during development.".
- HG-3_(rocket_engine) successor Space_Shuttle_main_engine.
- HG-3_(rocket_engine) type "liquid".
- HG-3_(rocket_engine) subject Category:Hydrogen_rocket_engines.
- HG-3_(rocket_engine) subject Category:Rocketdyne_engines.
- HG-3_(rocket_engine) comment "The HG-3 was a liquid-fuel cryogenic rocket engine which was designed for use on the upper stages of Saturn rockets in the post-Apollo era. Designed in the United States of America by Rocketdyne, the HG-3 would have burned cryogenic liquid hydrogen & liquid oxygen propellants, with each engine producing 1,400.7 kN (315,000 lbf) of thrust during flight. The engine was designed to produce a specific impulse (Isp) of 451 seconds in a vacuum, or 280 seconds at sea level.".
- HG-3_(rocket_engine) label "HG-3 (rocket engine)".
- HG-3_(rocket_engine) sameAs m.0j3c7dj.
- HG-3_(rocket_engine) sameAs Q5629533.
- HG-3_(rocket_engine) sameAs Q5629533.
- HG-3_(rocket_engine) wasDerivedFrom HG-3_(rocket_engine)?oldid=571298022.
- HG-3_(rocket_engine) isPrimaryTopicOf HG-3_(rocket_engine).