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Military Aircraft-->Aircraft Systems-->F135
F135 Turbofan

The F135 turbofan engine with afterburner is a improved version of the F119-PW-100 (F-22 Raptor) and is specially designed for the new 1-engine F-35 Lightning II (JSF). P&W hopes to being awarded as the engine deliver for all 3 versions (conventional takeoff and landing (CTOL), carrier-variant takeoff and landing (CV) and the short takeoff and vertical landing (STOVL).

The F135 engine is the most powerful fighter jet engine ever build. It produces a thrust of more than 40,000 pounds. This in comparison with the first CF6 engine for the Boeing 747 which had a thrust around the 40,000 pounds.

Just as the F119, the F135 has a 6-stage compressor, 1-stage turbine unit with a new Low pressure turbine (LPT). Pratt & Whitney developed the engine as maintenance friendly for example by reducing the engine components with 40% in comparison with current fighter jet engines. It is also equipped with automatic field data and test systems.

All 3 Lightning II version will get probably the F135 engine from Pratt and Whitney which differs a little bit.

 

Engine F-35 STOL en CV  
Maximum Thrust 43.000lbf (191.3 kN)
Intermediate Thrust 22.800lbf (128.1 kN)
Length 220 inches (5.59 m)
Inlet diameter 46 inches (1.17 m)
Maximum diameter 51 inches (1.30 m)
Bypass ratio 0.75
Overall Pressure Ratio 28
   

 

Engine F-35 CTOL  
Maximum Thrust 43.000 lbf (191.3kN)
Short Take Off Thrust 38.100 lbf (169.5kN)
Hover Thrust 39.400lbs (175.3 kN)
Length 396 inches (9.37 meters)
Inlet diameter 46 inches (1.17 m)
Maximum diameter 51 inches (1.30 m)
Lift Fan Inlet Diameter 51 inches (1.30 m)
Bypass ratio (BPR)  
Conventional 0.56 Powered Lift 0.51
Overall Pressure Ratio  
Conventional 28 Powered Lift 29
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Last updated: August 16, 2010