The TF39 was the world's first high-bypass turbofan. This engine won the competition to power the C-5 Galaxy in 1965.

models

• TF39-GE-1C: 43,000 lb (191 kN) thrust

specifications

• Turbofan Bypass ratio: 8-to-1
• 1-1/2 stage fan
• Compressor: 16-stage
• Compressor pressure ratio: 25
• Turbine: 2-stage HP, 6-stage LP
• Mass flow: 1,550 lbs/sec
   

used by

• Lockheed C-5 Galaxy