America Military Rocket Designations

The following table provides a brief reference list of U.S. turbojet engines in order by their military designation. The following information is provided:

• Manufacturer: The designer and builder of the engine; some engines were developed and built by multiple companies.
• Model: The manufacturer's internal model designation of the engine.
• Designation: The military designation of the engine, which consists of a Type designation (LR = Liquid Rocket, SR = Solid Rocket) and sequence number. Initially, even numbers were assigned to US Navy projects and odd numbers assigned to US Army and Air Force projects. This was later dropped, and only the USAF has continued using this sequence. These were followed by a manufacturer's code and subtype; for example J79-GE-19 indicates 79th turbojet procured, designed and/or manufactured by General Electric, 19th subvariant of this design. The subtype numbers were again assigned to military branch, with even numbers being used for US Navy projects and odd numbers being used for US Army and Air Force projects. Sometimes further changes were signified by an additional letter (J79-GE-19A).
• Aircraft: US military aircraft or projects which utilized the engine (other aircraft not listed).

LR = Liquid Rocket       Manufacturer Model Designation Aircraft Aerojet 25-AL-1000 LR1 A-20 RATO Reaction Motors ? LR2 ? Aerojet 25-ALD-1000 LR3 B-25 RATO ? ? LR4 ? Aerojet X40-ALD-3000 LR5 RATO Reaction Motors ? LR6 ? Aerojet XCALT-6000 LR7 ? Reaction Motors ? LR8 D-558-2, X-1E Aerojet X4-AL-1000 LR9 G-4 Reaction Motors ? LR10 ? Reaction Motors ? LR11 X-1, XF-91, X-15, X-24 ? ? LR12 ? Aerojet X60-ALD-4000 LR13 B-29, B-45 RATO ? ? LR14 ? Aerojet XCNLT-1500 LR15 ? Aerojet ? LR16 ? Curtiss-Wright ? LR17 B-45 RATO ? ? LR18 ? Curtiss-Wright ? LR19 ? Aerojet ? LR20 ? Curtiss-Wright ? LR21 ? Reaction Motors ? LR22 ? Aerojet X90-ALT-60000 LR23 ? Aerojet ? LR24 ? Curtiss-Wright ? LR25 X-2 Reaction Motors ? LR26 ? Curtiss-Wright ? LR27 F-91 ? ? LR28 ? Curtiss-Wright ? LR29 ? Reaction Motors ? LR30 X-15 M. W. Kellog ? LR31 ? Reaction Motors ? LR32 H-15 Reaction Motors ? LR33 ? Reaction Motors ? LR34 ? Reaction Motors ? LR35 ? ? ? LR36 ? Curtiss-Wright ? LR37 ? ? ? LR38 ? Reaction Motors ? LR39 ? Reaction Motors ? LR40 F8U North American ? LR41 ? North American ? LR42 FJ North American ? LR43 X-11, X-12 Thiokol TD-174 LR44 ? Aerojet AJ24-1 LR45 F-84, B-56 North American ? LR46 A3J M. W. Kellog SPD 649-1 LR47 B-56 Reaction Motors ? LR48 ? Aerojet ? LR49 ? General Electric X-405 LR50 ? Aerojet ? LR51 ? Aerojet AJ-10 LR52 ? Aerojet ? LR53 F-80 North American ? LR54 F8U North American ? LR55 ? Aerojet ? LR56 F8U ? ? LR57 ? Thiokol TD-187 LR58 AGM-12 Aerojet ? LR59 ? ? ? LR60 ? ? ? LR61 ? Thiokol TD-232 LR62 AGM-12 Aerojet ? LR63 F-84, F-86 RATO Rocketdyne ? LR64 AQM-37 Bell ? LR65 X-9 ? ? LR66 not assigned? Bell ? LR67 ? ? ? LR68 not assigned? ? ? LR69 ? ? ? LR70 not assigned? North American ? LR71 ? ? ? LR72 not assigned? Aerojet ? LR73 ? ? ? LR74 not assigned? M. W. Kellog ? LR75 ? ? ? LR76 not assigned? ? ? LR77 ? ? ? LR78 not assigned? Rocketdyne MB-3 LR79 ? ? ? LR80 not assigned? Bell ? LR81 ? ? ? LR82 not assigned? North American ? LR83 ? ? ? LR84 not assigned? ? ? LR85 ? ? ? LR86 not assigned? Aerojet General ? LR87 LGM-25 Titan ? ? LR88 not assigned? Rocketdyne MA-2, MA-3 LR89 Atlas (booster) ? ? LR90 not assigned? Aerojet General ? LR91 LGM-25 Titan ? ? LR92 not assigned? ? ? LR93 ? ? ? LR94 not assigned? ? ? LR95 ? ? ? LR96 not assigned? ? ? LR97 ? ? ? LR98 not assigned? Reaction Motors / Thiokol TD-214 Pioneer LR99 X-15 ? ? LR100 not assigned? Rocketdyne MA-3, MA-5 LR101 Atlas (vernier) ? ? LR102 not assigned? ? ? LR103 ? ? ? LR104 not assigned? Rocketdyne MA-2, MA-3 LR105 Atlas (sustainer) ? ? LR106 not assigned? Hughes ? LR107 ? ? ? LR108 not assigned? ? ? LR109 ? ? ? LR110 not assigned? ? ? LR111 ? ? ? LR112 not assigned? Aerojet ? LR113 ? ? ? LR114 not assigned? Pratt & Whitney RL-10-A-1 LR115 ? ? ? LR116 not assigned? ? ? LR117 ? ? ? LR118 not assigned? Pratt & Whitney RL-10-A-3 LR119 ? ? ? LR120 not assigned? Rocketdyne ? LR121 NF-104A ? ? LR122 not assigned? ? ? LR123 ? ? ? LR124 not assigned? ? ? LR125 ? ? ? LR126 not assigned? ? ? LR127 ? ? ? LR128 not assigned? Pratt & Whitney ? LR129 ? ? ? LR130 not assigned? ? ? LR131 ? Rocketdyne RS-47 LR132 ? Manufacturer Model Designation Aircraft

SR = Solid Rocket       Manufacturer Model Designation Aircraft ? ? SR1 ? ? ? SR2 ? ? ? SR3 ? ? ? SR4 ? ? ? SR5 ? ? ? SR6 ? ? ? SR7 ? ? ? SR8 ? Hercules ? SR9 ? ? ? SR10 ? Hercules ? SR11 ? ? ? SR12 ? Lockheed ? SR13 ? ? ? SR14 ? ? ? SR15 ? ? ? SR16 ? ? ? SR17 ? ? ? SR18 ? Aerojet ? SR19 LGM-30 Minuteman ? ? SR20 ? ? ? SR21 ? ? ? SR22 ? ? ? SR23 ? ? ? SR24 ? ? ? SR25 ? ? ? SR26 ? ? ? SR27 ? ? ? SR28 ? ? ? SR29 ? ? ? SR30 ? ? ? SR31 ? ? ? SR32 ? ? ? SR33 ? ? ? SR34 ? ? ? SR35 ? ? ? SR36 ? ? ? SR37 ? ? ? SR38 ? ? ? SR39 ? ? ? SR40 ? ? ? SR41 ? ? ? SR42 ? ? ? SR43 ? ? ? SR44 ? Atlantic Research ? SR45 ? ? ? SR46 ? United Technology Center ? SR47 ? ? ? SR48 ? Thiokol TU-289 SR49 AIR-2 Genie ? ? SR50 ? Thiokol ? SR51 ? ? ? SR52 ? ? ? SR53 ? ? ? SR54 ? United Technology Center ? SR55 ? ? ? SR56 ? ? ? SR57 ? ? ? SR58 ? Atlantic Research ? SR59 ? ? ? SR60 ? Atlantic Research ? SR61 ? ? ? SR62 ? ? ? SR63 ? ? ? SR64 ? ? ? SR65 ? ? ? SR66 ? ? ? SR67 ? ? ? SR68 ? ? ? SR69 ? ? ? SR70 ? Aerodyne ? SR71 ? ? ? SR72 ? Aerojet ? SR73 LGM-30 Minuteman ? ? SR74 ? Lockheed ? SR75 AGM-69 SRAM ? ? SR76 ? ? ? SR77 ? ? ? SR78 ? ? ? SR79 ? ? ? SR80 ? ? ? SR81 ? ? ? SR82 ? ? ? SR83 ? ? ? SR84 ? ? ? SR85 ? ? ? SR86 ? ? ? SR87 ? ? ? SR88 ? ? ? SR89 ? ? ? SR90 ? ? ? SR91 ? ? ? SR92 ? ? ? SR93 ? ? ? SR94 ? ? ? SR95 ? ? ? SR96 ? ? ? SR97 ? ? ? SR98 ? ? ? SR99 ? ? ? SR100 ? ? ? SR101 ? ? ? SR102 ? ? ? SR103 ? ? ? SR104 ? Aerojet ? SR105 2.75" FFAR Improved ? ? SR106 ? ? ? SR107 ? ? ? SR108 ? Thiokol TX-481 SR109 AGM-65 Maverick Aerodyne ? SR110 ? ? ? SR111 ? ? ? SR112 ? Thiokol ? SR113 AGM-88 HARM Thiokol TX-633 SR114 AGM-65 Maverick Aerojet ? SR115 AGM-65 Maverick Aerojet ? SR116 AIM-9J,P Sidewinder ? ? SR117 ? ? ? SR118 ? ? ? SR119 ? ? ? SR120 ? Naval Propellant Plant ? SR121 MQM-107 Rocketdyne ? SR122 AGM-130 Manufacturer Model Designation Aircraft

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