Comparison of orbital rocket engines

This page is an incomplete list of orbital rocket engine data and specifications.

Current, upcoming, and in-development rocket engines

Engine Origin Designer Vehicle Status Use Propellant Power cycle Specific impulse (s) Thrust (N) Chamber pressure (bar) Mass (kg) Thrust:weight ratio Oxidizer:fuel ratioAeon-RRelativity SpaceTerran RDevelopment1st, 2ndCH4 / LOXGas generator AJ10-190 Aerojet Space Shuttle, Orion, Apollo CSM Active Upper N2O4 / MMH Pressure-fed Aquila SLIsar AerospaceSpectrumDevelopment1stC3H8 / LOXGas generatorAquila VACIsar AerospaceSpectrumDevelopment2ndC3H8 / LOXGas generator Archimedes Rocket Lab Neutron Development 1st, 2nd CH4 / LOX Staged, oxidizer-rich BE-3U Blue Origin New Glenn Active 2nd LH2 / LOX Expander, open >90 BE-4 Blue Origin New Glenn, Vulcan Active 1st CH4 / LOX Staged, oxidizer-rich BE-7Blue OriginBlue MoonDevelopment1stLH2 / LOXExpander, open 5.5-7.1 CE-20 LPSC GSLV Mk III Active Upper LH2 / LOX Gas generator CE-7.5 LPSC GSLV Mk II Active Upper LH2 / LOX Staged, fuel-rich E2 ABL Space Systems RS1 Active 1st RP-1 / LOX // Jet-A / LOX Gas generator 64 E2 Vacuum ABL Space Systems RS1 Active 2nd RP-1 / LOX // Jet-A / LOX Gas generator Engine-2 Vast Development 1st RP-1 / LOX Staged, oxidizer-rich (SL) 100 Engine-2 Vacuum Vast Development 2nd RP-1 / LOX Staged, oxidizer-rich GEM 63 Northrop Grumman Atlas V Active Booster HTPB with fuel GEM 63XL Northrop Grumman Vulcan Active Booster HTPB with fuel Hadley Ursa Major Technologies Rocket 4Active 2nd RP-1 / LOX Staged, oxidizer-rich (SL)62HelixRocket Factory AugsburgRFA OneDevelopment1st, 2ndRP-1 / LOXStaged, oxidizer-rich,325 (SL) HyPER-15 Innospace Hanbit-Nano, -Micro, -Mini Development 1st Paraffin / LOX Electric pump LE-5B-3 Mitsubishi, JAXA H-3 Active Upper LH2 / LOX Expander, open LE-9Mitsubishi, JAXAH-3Active1stLH2 / LOXExpander, open.9 Lightning 1 Firefly Aerospace Alpha Active 2nd RP-1 / LOX Combustion tap-off M10 Avio Vega-E Development Upper CH4 / LOX Expander, closed Merlin 1D FT SpaceX Falcon 9 B5, Heavy Active 1st RP-1 / LOX Gas generator (SL) Merlin Vacuum 1D SpaceX Falcon 9 B5, Heavy Active 2nd RP-1 / LOX Gas generator Miranda Firefly Aerospace Antares 300 Series, MLV Development 1st RP-1 / LOX Combustion tap-off NK-33A (AJ26-62), 11Д111 / 14Д15 JSC Kuznetsov Antares 100, Soyuz-2-1v Retired 1st RP-1 / LOX Staged, oxidizer-rich (SL) (SL) P120 Avio Ariane 6, Vega-C Active Booster, 1st HTPB with fuel Raptor SpaceX Starship Development 1st, 2nd CH4 / LOX Staged, full-flow (SL) (SL) Raptor Vacuum SpaceX Starship Development 2nd CH4 / LOX Staged, full-flow RD-0124, 14Д23 KBKhA Soyuz-2.1b, Soyuz-2-1v, Angara Active 2nd, 3rd RP-1 / LOX Staged, oxidizer-rich RD-0146D KBKhA Angara Development Upper LH2 / LOX Expander, closed RD-107A, 14Д22 NPO Energomash Soyuz-FG, -2 Active 1st RP-1 / LOX Gas generator (SL) (SL) RD-108A, 14Д21 NPO Energomash Soyuz-FG, -2 Active 2nd RP-1 / LOX Gas generator (SL) (SL) RD-171M, 11Д520 NPO Energomash Soyuz-5, Zenit-2M, -3SL, -3SLB, -3SLBF Active 1st RP-1 / LOX Staged, oxidizer-rich (SL) (SL) RD-180 NPO Energomash Atlas V, III Active 1st RP-1 / LOX Staged, oxidizer-rich (SL) (SL) RD-191 NPO Energomash Angara Active 1st RP-1 / LOX Staged, oxidizer-rich (SL) (SL) RD-276, 14Д14М NPO Energomash Proton-M Active 1st N2O4 / UDMH Staged, oxidizer-rich (SL) (SL) RD-801 Pivdenne/Pivdenmash Mayak Development 1st RP-1 / LOX Staged, oxidizer-rich (SL) (SL) RD-809K Pivdenne/Pivdenmash Mayak Development Upper RP-1 / LOX Staged, oxidizer-rich RD-810 Pivdenne/Pivdenmash Mayak, Zenit Development 1st RP-1 / LOX Staged, oxidizer-rich (SL) (SL) RD-861K Pivdenne/Pivdenmash Cyclone-4M Development 2nd N2O4 / UDMH Gas generator RD-870 Pivdenne/Pivdenmash Cyclone-4M Development 1st RP-1 / LOX Staged, oxidizer-rich (SL) (SL) Reaver 1 Firefly Aerospace Alpha Active 1st RP-1 / LOX Combustion tap-off 265 (SL) 75 RL10A-4-2 Aerojet Rocketdyne Atlas IIIB, V Retired Upper LH2 / LOX Expander, closed RL10B-2 Aerojet Rocketdyne Delta III, IV, SLS Active Upper LH2 / LOX Expander, closed RL10C-1 Aerojet Rocketdyne Delta III, IV, SLS, Vulcan Active Upper LH2 / LOX Expander, closed RS-25 Rocketdyne Space Shuttle, SLS Active 1st LH2 / LOX Staged, fuel-rich (SL) (SL)Aerojet Rocketdyne, RS-25 Engine (accessed July 22, 2014) RS-88 LAE Rocketdyne Boeing Starliner Active Upper MMH / NTO Gas generator (SL) Rutherford Rocket Lab Electron Active 1st RP-1 / LOX Electric pump (SL)55 (SL) Rutherford Vacuum Rocket Lab Electron Active 2nd RP-1 / LOX Electric pump S139 SDSC PSLV Active 1st HTPB with fuel S200 SDSC GSLV Mk III Active Booster HTPB with fuel SCE-200 LPSC GSLV Mk III, ULV Development Upper, main RP-1 / LOX Staged, oxidizer-rich (SL) (SL) SiriusGilmour SpaceErisDevelopmentBoosterHybrid SLS Solid Rocket Booster Orbital ATK SLS Active Booster PBAN with fuel SLV-1 Godrej & Boyce PSLV Active Booster HTPB with fuel SRB-A3 IHI Aerospace, JAXA H-IIA, H-IIB, Epsilon Active Booster HTPB (SL) with fuel TEPREL-B PLD Space Miura 1 Active 1st RP-1 / LOX Pressure-fed (SL) TEPREL-C PLD Space Miura 5 Development 1st, 2nd RP-1 / LOX Gas generator (SL) TQ-12 Landspace ZQ-2 Active 1st CH4 / LOX Gas generator (SL) Vikas (rocket engine) LPSC PSLV, GSLV, GSLV Mk III Active 2nd, main, booster N2O4 / UDMH Gas generator –804,500 –756,500 (SL) –58.5 Vinci Snecma Ariane 6 Active Upper LH2 / LOX Expander, closed Vulcain 2.1 Snecma Ariane 6 Active 1st LH2 / LOX Gas generator YF-21B AALPT Long March 2E, 2F, 3 Active Booster, 1st N2O4 / UDMH Gas generator  (SL)  (SL) YF-21C AALPT Long March 2C, 2D, 3A, 3B, 3C, 4B, 4C Active 1st N2O4 / UDMH Gas generator  (SL)  (SL) YF-22B AALPT Long March 2E, 2F Active 2nd N2O4 / UDMH Gas generator YF-22C AALPT Long March 2C, 2D, 4B, 4C Active 2nd N2O4 / UDMH Gas generator YF-22D AALPT Long March 3 Active 2nd N2O4 / UDMH Gas generator YF-22E AALPT Long March 3A, 3B, 3C Active 2nd N2O4 / UDMH Gas generator YF-25 AALPT Long March 3B, 3C Active Booster N2O4 / UDMH Gas generator  (SL)  (SL) YF-40 AALPT Long March 4B, 4C Active 3rd N2O4 / UDMH Gas generator YF-50D AALPT Long March 3B, 3C, 5, 7 Active Upper N2O4 / UDMH Pressure-fed YF-73 AALPT Long March 3 Active 3rd LH2 / LOX Gas generator YF-75 AALPT Long March 3A, 3B, 3C Active 3rd LH2 / LOX Gas generator YF-75D AALPT Long March 5 Active 2nd LH2 / LOX Expander, closed YF-77 AALPT Long March 5 Active 1st LH2 / LOX Gas generator (SL) (SL) YF-79 AALPT Long March 9 Development 3rd LH2 / LOX Expander, closed YF-90 AALPT Long March 9 Development 2nd LH2 / LOX Staged, fuel-rich YF-100 AALPT Long March 7, 5 Active 1st RP-1 / LOX Staged, oxidizer-rich (SL) 1,199,190 (SL) YF-115 AALPT Long March 6, 7 Active 2nd RP-1 / LOX Staged, oxidizer-rich YF-130 AALPT Long March 9 Development 1st RP-1 / LOX Staged, oxidizer-rich (SL) (SL) Zefiro 9A Avio Vega-C Active 3rd HTPB with fuel Zefiro 40 Avio Vega-C Active 3rd HTPB with fuelZenithStokeNovaDevelopment1stCH4 / LOXStaged, full-flow

Retired and cancelled rocket engines