General Electric TF39

TF39
A TF39 on a C-5 Galaxy at ILA (Internationale LuftfahrtAusstellung) in Berlin, 2008
TypeHigh-bypass turbofan
National originUnited States
ManufacturerGE Aviation
First run1964
Major applicationsLockheed C-5 Galaxy
Number built463
Developed into

The General Electric TF39 was a high-bypass turbofan engine that was developed to power the Lockheed C-5 Galaxy. It was the first high-bypass jet engine developed, which became the foundation for the General Electric CF6 Jet Engine and the General Electric LM2500 Marine Turbine.