J-2

J-2
Credit - © Mark Wade

Manufacturer Name: J-2. Designer: Rocketdyne. Developed in: 1960. Propellants: Lox/LH2. Thrust(vac): 1,033.100 kN (232,250 lbf). Thrust(sl): 486.200 kN (109,302 lbf). Isp: 421 sec. Isp (sea level): 200 sec. Burn time: 475 sec. Mass Engine: 1,438 kg (3,170 lb). Diameter: 2.01 m (6.60 ft). Length: 3.38 m (11.08 ft). Chambers: 1. Chamber Pressure: 30.00 bar. Area Ratio: 28.00. Oxidizer to Fuel Ratio: 5.50. Thrust to Weight Ratio: 73.18. Country: USA. Status: Study 1961. First Flight: 1966. Last Flight: 1975. Flown: 87.

Used in Saturn IVB stage in Saturn IB and Saturn V, and Saturn II stage in Saturn V. Specific impulse and thrust is for final flight version; J-2 had a specific impulse of 418 sec/thrust of 90,700 kgf/mix ratio of 5.00 on LV's SA-201 through 203, and 419 sec/thrust of 102,040 kgf on SA-204 through 207 and SA-501 to 503. Sea level versions with reduced expansion ratio proposed for Saturn II first stage use. Upgraded toroidal aerospike versions (J-2T-200K and J-2T-250K) studies for upgrades to Saturn upper stages. Modestly improved J-2S was tested and provides basis for X-33 linear aerospike engine thirty years later. Proposed for use in Nova A-2; Saturn IVB; Nova NASA-3; Nova B-2; Saturn II; Jarvis-2; Saturn MS-II-1; Saturn S-II-8; Saturn S-IVC; Nova 60-8-3; Saturn S-II-C3; Saturn S-II-4; Saturn S-II. Saturn V S-ll & S-IVB Stage Engines, Saturn IB S-IVB. Upper Stage Engine. Gas generator, pump-fed.

J-2 used on Rocket Stages

Used on stage: Astro-2.

Used on stage: Jarvis-2. on launch vehicle: Jarvis.

Used on stage: Nova 4 J-2. on launch vehicle: Nova 8L Mod.

Used on stage: Nova 60-8-3. on launch vehicle: Nova 4S.

Used on stage: Nova 60-8-3. on launch vehicle: Nova 7S.

Used on stage: Nova 60-8-3. on launch vehicle: Nova 8L.

Used on stage: Nova 9L-3. on launch vehicle: Nova 5S.

Used on stage: Nova 9L-3. on launch vehicle: Nova 9L.

Used on stage: Nova 9L-4. on launch vehicle: Nova 5S.

Used on stage: Nova 9L-4. on launch vehicle: Nova 9L.

Used on stage: Nova A-2. on launch vehicle: Nova A.

Used on stage: Nova A-2. on launch vehicle: Nova C.

Used on stage: Nova B-2. on launch vehicle: Nova B.

Used on stage: Nova B-2. on launch vehicle: Nova D.

Used on stage: Nova GD-B-2. on launch vehicle: Nova GD-B.

Used on stage: Nova NASA-3. on launch vehicle: Nova NASA.

Used on stage: Saturn II. on launch vehicle: Saturn INT-18.

Used on stage: Saturn II. on launch vehicle: Saturn INT-21.

Used on stage: Saturn II. on launch vehicle: Saturn V.

Used on stage: Saturn II. on launch vehicle: Saturn V-Centaur.

Used on stage: Saturn II. on launch vehicle: Saturn V-D.

Used on stage: Saturn II C-5A. on launch vehicle: Saturn C-3B.

Used on stage: Saturn II C-5A. on launch vehicle: Saturn C-3BN.

Used on stage: Saturn II C-5A. on launch vehicle: Saturn C-4B.

Used on stage: Saturn II C-5A. on launch vehicle: Saturn C-5.

Used on stage: Saturn II C-5A. on launch vehicle: Saturn C-5N.

Used on stage: Saturn IVB. on launch vehicle: Saturn C-4.

Used on stage: Saturn IVB. on launch vehicle: Saturn C-8.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn IB.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn IB-C.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn IB-CE.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn IB-D.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn INT-05.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn INT-05A.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn INT-11.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn INT-12.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn INT-13.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn INT-14.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn INT-15.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn INT-16.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn INT-17.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn INT-18.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn INT-19.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn INT-27.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn LCB-Alumizine-140.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn LCB-Alumizine-250.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn LCB-Lox/RP-1.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn LCB-SR.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn LCB-Storable-140.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn LCB-Storable-250.

Used on stage: Saturn IVB (S-IB). on launch vehicle: Saturn S-IC-TLB.

Used on stage: Saturn IVB (S-V). on launch vehicle: Saturn INT-20.

Used on stage: Saturn IVB (S-V). on launch vehicle: Saturn V.

Used on stage: Saturn IVB (S-V). on launch vehicle: Saturn V-A.

Used on stage: Saturn IVB (S-V). on launch vehicle: Saturn V-C.

Used on stage: Saturn IVB (S-V). on launch vehicle: Saturn V-Centaur.

Used on stage: Saturn IVB (S-V). on launch vehicle: Saturn V-D.

Used on stage: Saturn IVB C-3B. on launch vehicle: Saturn C-3B.

Used on stage: Saturn IVB C-5A. on launch vehicle: Saturn C-4B.

Used on stage: Saturn IVB C-5A. on launch vehicle: Saturn C-5.

Used on stage: Saturn IVB-A. on launch vehicle: Saturn IB-A.

Used on stage: Saturn MS-II-1. on launch vehicle: Saturn MLV-V-1.

Used on stage: Saturn MS-II-1. on launch vehicle: Saturn MLV-V-2.

Used on stage: Saturn MS-II-1. on launch vehicle: Saturn MLV-V-4(S)-A.

Used on stage: Saturn MS-II-1A. on launch vehicle: Saturn MLV-V-1A.

Used on stage: Saturn MS-II-1A. on launch vehicle: Saturn V-ELV.

Used on stage: Saturn MS-II-4(S)B. on launch vehicle: Saturn MLV-V-4(S).

Used on stage: Saturn MS-II-4(S)B. on launch vehicle: Saturn V-23(L).

Used on stage: Saturn MS-II-4(S)B. on launch vehicle: Saturn V-24(L).

Used on stage: Saturn MS-II-4(S)B. on launch vehicle: Saturn V-25(S)B.

Used on stage: Saturn MS-II-4(S)B. on launch vehicle: Saturn V-25(S)U.

Used on stage: Saturn MS-II-4(S)B. on launch vehicle: Saturn V-4X(U).

Used on stage: Saturn MS-IVB-1. on launch vehicle: Saturn MLV-V-1.

Used on stage: Saturn MS-IVB-1. on launch vehicle: Saturn MLV-V-4(S).

Used on stage: Saturn MS-IVB-1. on launch vehicle: Saturn MLV-V-4(S)-A.

Used on stage: Saturn MS-IVB-1A. on launch vehicle: Saturn MLV-V-1A.

Used on stage: Saturn MS-IVB-1A. on launch vehicle: Saturn V-23(L).

Used on stage: Saturn MS-IVB-1A. on launch vehicle: Saturn V-24(L).

Used on stage: Saturn MS-IVB-1A. on launch vehicle: Saturn V-25(S)B.

Used on stage: Saturn MS-IVB-1A. on launch vehicle: Saturn V-ELV.

Used on stage: Saturn MS-IVB-4(S)B.

Used on stage: Saturn MS-IVB-x.

Used on stage: Saturn S-II. on launch vehicle: Saturn C-2.

Used on stage: Saturn S-II-4. on launch vehicle: Saturn C-4.

Used on stage: Saturn S-II-8. on launch vehicle: Saturn C-8.

Used on stage: Saturn S-II-C3. on launch vehicle: Saturn C-3.

Used on stage: Saturn S-IVC.

Used on stage: SLS Stage A. on launch vehicle: SLS A-388.

Used on stage: SLS Stage A. on launch vehicle: SLS A-410.

Used on stage: SLS Stage A. on launch vehicle: SLS AB-825.

Used on stage: SLS Stage B. on launch vehicle: SLS AB-825.

Used on stage: SLS Stage B. on launch vehicle: SLS BC-2720.

J-2 used on Spacecraft

Used on: NASA Mars Flyby 1965.

Used on: Saturn MS-IVB-1.

Used on: Saturn MS-IVB-1A.

Used on: Saturn MS-IVB-4(S)B.

Used on: Saturn MS-IVB-x.

Bibliography and Further Reading

Kudryavtseva, V M, ed., Zhidkostnikh Raketnikh Dvigatley, Visshaya Shkola, Moscow, 1993. ISBN: 5060025632. Russian-language textbook on rocket theory. More at amazon.com...

Contact us with any corrections, additions, or comments.

Conditions for use of drawings, pictures, or other materials from this site..
To contact astronauts or cosmonauts.

© Mark Wade, 1997 - 2007 except where otherwise noted.

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