America Military Turbofan Designations

GE TF34 in test installation on USN Boeing B-47 Stratojet.

The following table provides a brief reference list of U.S. turbofan 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 (TF = Turbofan) and sequence number. For unknown reasons, the numerical sequence was started at 30, with even numbers being assigned to US Navy projects and odd numbers being assigned to US Army and Air Force projects. 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), with 'W' being used for engines with water injection and 'WA' being used for engines with water-alcohol injection; the letters 'I' and 'O' were not used. Around 1968, the designation system was revised slightly. The Type designator was changed from 'TF' to 'TF' and the numerical sequence and model suffixes were assigned as follows:
  • 100 - 399: US Air Force.
  • 400 - 699: US Navy.
  • 700 - 999: US Army.
• Aircraft: US military aircraft or projects which utilized the engine (other aircraft not listed).

TF = Turbofan       Manufacturer Model Designation Aircraft Pratt & Whitney JTF10A TF30 F-111, F-14, F-8, A-7, A-4, F6D General Electric X-84 TF31 Oxcart Allison ? TF32 ? Pratt & Whitney JT3D TF33 B-52, E-3, C-135, C-137, C-141, C-18, B-57 General Electric CF34 TF34 A-10, S-3 General Electric ? TF35 ? -- -- TF36 not assigned? General Electric CF700 TF37 ? -- -- TF38 not assigned? General Electric, Allison CTF39 TF39 C-5 -- -- TF40 not assigned? Allison ? TF41 A-7 Manufacturer Model Designation Aircraft

F = Turbofan       Manufacturer Model Designation Aircraft Pratt & Whitney JTF22 F100 F-15, F-16 General Electric ? F101 B-1 Lycoming ALF502 F102 A-9 General Electric CF6 F103 E-4, KC-10, VC-25 Garrett ATF3 F104 Compass Cope, Tacit Blue Pratt & Whitney JT9D F105 E-4 Teledyne ? F106 ? Williams International ? F107 AGM-86, BGM-109 CFM International CFM56 F108 E-3, E-6, C-135 Garrett TFE76 F109 T-46 General Electric F101 DFE F110 F-14, F-15, F-16 ? ? F111 ? Williams International ? F112 AGM-129, X-36 Rolls-Royce Mk 511 Spey F113 C-20 ? ? F114 ? ? ? F115? ? ? ? F116? ? Pratt & Whitney PW2037 F117 C-17 General Electric ? F118 B-2, U-2, ER-2 Pratt & Whitney PW5000 F119 F-22, F-23 General Electric GE37 F120 F-22, F-23 Williams International ? F121 ? Williams ? F122 ? ? ? F123 ? Garrett TFE1042 F124 T-45 (Australian) Garrett TFE1042-70 F125 No US aircraft (ROC Ching-Kuo IDF) Rolls-Royce Mk 611, 661 Tay F126 C-20 General Electric ? F127 ? General Electric ? F128 ? Williams International, Rolls-Royce FJ44 F129 Cessna JPATS ? ? F130 ? ? ? F131 ? ? ? F132 ? ? ? F133 ? ? ? F134 ? Pratt & Whitney ? F135 X-32, X-35, F-35 General Electric ? F136 F-35 Rolls-Royce, Allison AE3007H F137 ? General Electric ? F400 ? Pratt & Whitney ? F401 F-14, FV-12 Pratt & Whitney Pegasus F402 AV-8 ? ? F403 ? General Electric ? F404 F-117, F-20, F/A-18, A-6, X-29, X-31, A-4 Rolls-Royce, Turbomeca Adour F405 T-45 ? ? F406 ? ? ? F407 ? Teledyne CAE ? F408 BQM-145 ? ? F409 ? ? ? F410 ? ? ? F411 ? General Electric ? F412 A-12 ? ? F413 ? General Electric ? F414 F/A-18 Williams ? F415 ? General Electric ? F700 ? Manufacturer Model Designation Aircraft

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