AI-25TL, AI-25TLK Turbofan Engine

The AI-25TL engine is intended for L-39, the AI- 25TLK engine is intended for K-8J aircraft and other trainers. It is successfully operated worldwide.
The engine is an AI-25 turbofan follow-on. As compared the base engine, the AI-25TL (AI-25TLK) engine is distinguished by a higher compressor pressure ratio and higher turbine inlet temperature, all that increasing the engine thrust.
The engine is equipped with a special lubrication system to enable normal operation under zero-g and negative-g conditions.

Main advantages of the engine:
- high reliability and trouble-free operation; 
- longer service life as compared other similar engines; 
- high maintainability; 
- potential to further increase the engine performances after insignificant design changes.

    AI-25TL                    AI-25TLK
Maximum thrust rating (SLS, ISA): 
Thrust, kgf (kN)1720 (16,87)              1720 (16,87)
Specific fuel consumption,kg/kgf•h (kg/kN•h)0,575 (58,6)               0,575 (58,6)
Overall dimensions, mm: 
Length (with extension pipe)     3358                         2860
Width      985                          868
Height      958                         959.5
Dry weight, kg      350                          350
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