General Electric TF34

TF34
Type	Turbofan
National origin	United States
Manufacturer	General Electric
First run	1971
Major applications	A-10 Thunderbolt II ; S-3 Viking
Variants	General Electric CF34

The General Electric TF34 is an American military turbofan engine used on the A-10 Thunderbolt II and S-3 Viking.

Design and development[]

Developed by GE Aircraft Engines during the late 1960s, the original engine comprises a single stage fan, driven by a 4-stage low pressure (LP) turbine, supercharging a 14-stage high pressure (HP) compressor, driven by a 2-stage HP turbine. An annular combustor is featured. The TF34-GE-400A is rated at 9,275 lbf (41.26 kN) static thrust.

The civilian variant, the CF34, is used on a number of business and regional jets.

Variants[]

TF34-GE-2

Initial variant for Lockheed S-3, entered production in August 1972.

TF34-GE-100

Variant for Fairchild A-10A, first flown in A-10 during May 1972. Production began in October 1974.

TF34-GE-400A

Improved version of GE-2 for Lockheed S-3.

Applications[]

A TF34 attached to an A-10 Thunderbolt II

A TF34 mounted on the starboard pylon of an S-3B Viking aboard USS Kitty Hawk (CV-63)

Fairchild Republic A-10 Thunderbolt II
Lockheed S-3 Viking
Lockheed Martin RQ-170 Sentinel
Sikorsky S-72

Specifications (TF34-GE-400A)[]

Data from Jane's.^[1]

General characteristics

Type: Twin-shaft, high-bypass turbofan engine
Length: 100 in (250 cm)
Diameter: 52.2 in (133 cm)
Dry weight: 1,478 lb (670 kg)

Components

Compressor: Single-stage fan, 14 stage HP axial compressor
Combustors: Axial, annular
Turbine: 4 stage LP, 2 stage HP

Performance

Maximum thrust: 9,275 lbf (41 kN; 4,207 kgf)
Specific fuel consumption: 0.363 lb/(h·lbf) (10.3 mg/Ns)
Thrust-to-weight ratio: 6.28

References[]

^ Taylor 1982, p. 781.

Taylor, John W.R. Jane's All the World's Aircraft 1982-83., London, Jane's Publishing Company Ltd, 1982. ISBN 0 7106-0748-2.

External links[]

General Electric TF34 page

[1] Taylor 1982, p. 781.

[1]

v t General Electric aircraft engines
Turbojets	CJ610 CJ805 GE4/J5P J31 J33 J35 J47 J73 J79 J85 J87 YJ93 J97 YJ101
Turbofans	Affinity CF6 CF34 CF700 CFE738† CFM56† CJ805-23 F101 F108† F110 F118 YF120 F136† F404/F412 F414 GE90 GE9X GEnx GP7000† HF120† LEAP† Passport RM12† TF34 TF39 XA100
Turboprops/Turboshafts	Catalyst CT7 CT58 CT64 GE27 GE36 GE38 H-Series T31 T58 T64 T407 T408 T700 T901
Aeroderivative gas turbine engines	LM500 LM1500 LM1600 LM2500 LM6000 LM9000 LMS100
† Joint development aeroengines

v t United States military gas turbine aircraft engine designation system
Turbojets	J30 J31 J32 J33 J34 J35 J36 J37 XJ38 J39 J40 XJ41 J42 J43 J44 J45 J46 J47 J48 XJ49 J52 J54 J55 J57 J58 J60 J65 J67 J69 J71 J73 J75 J79 J81 J83 J85 J87 YJ93 J97 J100 YJ101 J102 J400 J402 J403 J700
Turboprops/ Turboshafts	T31 T33 T34 T35 T36 T37 T38 T39 T40 T41 T44 T46 T47 T49 T50 T51 T53 T54 T55 T56 (variants) T57 T58 T60 T61 T62 T63 T64 T65 T66 T67 T72 T73 T74 T76 T101 T400 T406 T407 T408 T700 T701 T702 T703 T706 LHTEC T800 APW T800 T900 T901
Turbofans	TF30 TF33 TF34 TF35 TF37 TF39 TF41 F100 F101 F102 F103 F104 F105 F106 F107 F108 F109 F110 F112 F113 F117 F118 F119 YF120 F121 F122 F124 F125 F126 F127 F128 F129 F130 F135 F136 F137 F138 F401 F402 F404 F405 F408 F412 F414
Adaptive cycle engines	XA100 XA101

v t United States Air Force system numbers
100–199	100 101 P 102 103 104 105 106¹ 107 A-1 A-2 108¹ 109¹ 110 111¹ 112 113¹ 114¹ 115¹ 116¹ 117 M 118 A 119 C/F E T Y 120 121 122 123 124 125 127¹ 129 131 132 133 134¹ 136¹ 137¹ 138 139 140 141¹ 142 143–197¹ 199 B C D
200–299	200 201 A/L B/W E 202 203¹ 204 205 206 207¹ 208 209¹ 210 211¹ 213 214 215¹ 216 217 218 219¹ 220 221 222 A 223¹ 224 225¹ 226 227–238¹ 239 240–278¹ 279 280–298¹
300–399	300 301¹ 302 303 304¹ 305¹ 306 A/L B 307 308 309 310¹ 311¹ 312¹ 313¹ 314 315 A-1 A-2 316 318¹ 319 320¹ 321 322¹ 324 L M/N 326 327 E 328 E 329 F 330¹ 331¹ 332¹ 333¹ 334¹ 335 336 337 338–379¹ 380 A/B/E/F/N P 381–397¹ 399
400–499	400 B/C/N E G/H M 401 402 403¹ 405 406¹ 408¹ 409¹ 410 E 411 E L 413 414 416 L M (I) 418 419¹ 420 L/W 421¹ 422 423 424 425 426 L 427 L 428 L 429 431 434 435 L 436 441 A L 442 443 444¹ 445 446 447 448¹ 449¹ 450 451 L 452 453 454¹ 457¹ 460 L 462 463 464 465 468 471 L (I) L (II) 474 L N 475¹ 476 E 477 478 A 479¹ 481 L 482 E M/Z 484 485 Z 487 488 490 491¹ 493 494 495 496 497 L 498 C E L 499
500–599	501–519¹ 521–529¹ 531–541¹ 543–549¹ 550 551–559¹ 560 561–569¹ 571–579¹ 580 581–589¹ 591 593–599¹
600–699	601 A 602 A 603 A 605 606 607 608¹ 609 610¹ 611¹ 612¹ 613¹ 615¹ 616 617¹ 619¹ 620 621 A/B (I) 622 624 626¹ 628¹ 629¹ 630¹ 631¹ 634 A B 636¹ 637¹ 638 641 644¹ 645¹ 646¹ 647¹ 648 A P 649 P 653¹ 654¹ 655 656 657¹ 658¹ 659¹ 662¹ 663¹ 665 666 669¹ 671¹ 672 673¹ 676¹ 677¹ 678¹ 681 682¹ 683 A V 684¹ 687 P 688¹ 689¹ 691 C Z 692¹ 693 694¹ 695 A B C L N P Q R S (I) S (II) 696¹ 697¹ 698¹ 699¹
700–799	700–735¹ 737¹ 738¹ 739¹ 740¹ 742 743 744¹ 745 746–753¹ 755–799¹
800–899	800¹ 801¹ 802 803¹ 804¹ 805¹ 807 808–816¹ 818¹ 819¹ 820¹ 821¹ 822¹ 824–831¹ 832 833¹ 834 835–845¹ 847–899¹
900–999	900–951¹ 952 853¹ 854¹ 855¹ 956 957–967¹
¹ Unknown or not assigned