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Ivchenko AI-25

The Engine Specifications
 
Ivchenko developed the AI-25 for the Yak-40.  The design stresses simplicity over performance resulting in a conservative engine.  The AI-25TL is a long-jet pipe variant used in the Aero L-39.

The earliest flight I can find for the AI-25 is in 1966 powering the prototype Yak-40.

Turbofan (2-spool)
Compressor: 8-stage
Turbine: 3-stage
Pressure ratio: 8:1
Bypass ratio: 2
 
Models Used by
 
AI-25TL: 3,792 lb (16.9 kN) thrust
Aero L-39 Albatros
Yakovlev Yak-40
 
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more about Ivchenko
 

page updated 02 November 2003

 

 

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Kenneth W Shanaberger 2000 - 2010