Ivchenko AI-25

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AI-25TL engine exhibited in the Szolnoki Repülőmúzeum in Hungary

The Ivchenko Progress AI-25 is a twin-shaft turbofan engine from the Soviet manufacturer Ivchenko Progress , which was developed for the Jak-40 short-haul airliner . It was the first bypass engine to be used in the USSR for short-haul aircraft. The unit is still being produced in the 2E series by the Ukrainian aircraft engine manufacturer Motor Sitsch .

Series production started in 1967 at plant No. 478 in Zaporozhye and since then over 9,360 units in the variants AI-25 , AI-25TL , AI-25TLK and AI-25TLSch have been delivered. The engine is used in the following aircraft types:

Technical specifications

AI-25TL of an L-39 Albatros

→ Sources

  • Length: 3350 mm
  • Diameter: 1000 mm
  • Empty weight: 350 kg
  • Compressor: Axial, 3 low pressure compressor stages, 9 high pressure compressor stages
  • Combustion chamber: ring-shaped
  • Turbine: 2 high pressure turbine stages, 1 low pressure turbine stage
  • Maximum thrust: 16.9 kN
  • Total print ratio: 9.5: 1
  • Specific fuel consumption: 58.6 kg / (kN h)
  • Thrust-to-weight ratio: 4.9: 1

Individual evidence

  1. AI-25, Series 2E; Used on passenger aircraft for short and medium routes
  2. Ulf Gerber: The great book of Soviet aviation 1920–1990 . Rockstuhl, Bad Langensalza 2019, ISBN 978-3-95966-403-5 , p. 377 .
  3. deagel.com: AI-25
  4. Gas Turbine Engines. Aviation Week & Space Technology Source Book 2009 . P. 120.
  5. Motor-Sitsch manufacturer's website http://www.motorsich.com/eng/products/aircraft/tde/ai-25tl/