General Electric TF34

TF34
A TF34 mounted on the starboard pylon of an S-3B Viking aboard USS Kitty Hawk (CV-63).
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 a military turbofan engine used on the A-10 Thunderbolt II and S-3 Viking. 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.

A TF34 attached to an A-10 Thunderbolt II

Applications

• A-10 Thunderbolt^[1]
• S-3 Viking
• Sikorsky S-72
• Lockheed Martin RQ-170 Sentinel - possible, not confirmed.^[2]

Specifications (TF34)

General characteristics

• Type: twin-shaft, bypass turbofan engine
• Length: 103 in (2.62m)
• Diameter: 49 in (1.24m)
• Dry weight: 1670 lbs (757 kg)

Components

• Compressor: single-stage fan, 14 stage HP axial flow compressor
• Combustors: annular
• Turbine: 4 stage LP, 2 stage HP

Performance

• Maximum thrust: 9,250 lb (41.2 kN)
• Thrust-to-weight ratio: 5.6:1

See also

Related development

• General Electric CF34

Comparable engines

• Lycoming YF102

Related lists

• List of aircraft engines

References

1. "Fact Sheet: A-10 THUNDERBOLT II". USAF. 2012-05-21. Retrieved 27 May 2012.
2. Fulghum, David A.; Bill Sweetman (14 December 2009). "Stealth over Afghanistan". Aviation Week (McGraw-Hill): 26–27.

External links

• General Electric TF34 page