The Ivchenko AI-25 is a family of military and civilian twin-shaft medium bypass turbofan engines developed by Ivchenko OKB of the

Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...

. It was the first bypass engine ever used on

short haul In aviation, the flight length refers to the distance of a flight. Commercial flights are often categorized into long-, medium- or short-haul by commercial airlines based on flight length, although there is no international standard definition and ...

aircraft in the USSR. The engine is still produced by

Ukrainian Ukrainian may refer to: * Something of, from, or related to Ukraine * Something relating to Ukrainians, an East Slavic people from Eastern Europe * Something relating to demographics of Ukraine in terms of demography and population of Ukraine * So ...

based aircraft engine manufacturing company,

Motor Sich The Motor Sich Joint Stock Company ( uk, АТ «Мотор Січ») is a Ukrainian aircraft engine manufacturer headquartered in Zaporizhzhia. The company manufactures engines for airplanes and helicopters, and also industrial marine gas turbi ...

Development

The AI-25 was designed to power the

Yakovlev Yak-40 The Yakovlev Yak-40 (russian: Яковлев Як-40; NATO reporting name: Codling) is a regional jet designed by Yakovlev. The trijet's maiden flight was in 1966, and it was in production from 1967 to 1981. Introduced in September 1968, the ...

tri-jet airliner, often called the first

regional jet A regional jet (RJ) is a jet-powered regional airliner with fewer than 100 seats. The first one was the Sud-Aviation Caravelle in 1959, followed by the widespread Yakovlev Yak-40, Fokker F-28, and BAe 146. The 1990s saw the emergence of ...

transport aircraft, and is the starting point for the Lotarev DV-2 turbofan engine. The project was launched in 1965, with the AI-25s first test flight in 1966, and finally cleared for production in 1967. In 1972, the AI-25 was selected for the Polish

PZL M-15 Belphegor The PZL M-15 was a jet-powered biplane designed and manufactured by the Polish aircraft company WSK PZL-Mielec for agricultural aviation. In reference to both its strange looks and relatively loud jet engine, the aircraft was nicknamed ''Belph ...

, the world's only jet-powered

biplane A biplane is a fixed-wing aircraft with two main wings stacked one above the other. The first powered, controlled aeroplane to fly, the Wright Flyer, used a biplane wing arrangement, as did many aircraft in the early years of aviation. While a ...

. Development of the AI-25 continued and the uprated AI-25TL was designed for use by the Czechoslovak

Aero L-39 Albatros The Aero L-39 Albatros is a high-performance jet trainer designed and produced in Czechoslovakia by Aero Vodochody. It is the most widely used jet trainer in the world; in addition to performing basic and advanced pilot training, it has also flo ...

military trainer with the first flight occurring in 1968. The L-39, would go on to become one of the most popular, and widespread trainer aircraft in the world, with over 3,000 L-39s produced, and with 2,900 examples still in active service today. A smaller version of the AI-25TL, the AI-25TLK has equipped the

People's Republic of China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slig ...

Hongdu L-11 Hongdu Aviation Industry Group Ltd. (HAIG) (), formerly China Nanchang Aircraft Manufacturing Corporation or CNAMC, is a Chinese aircraft manufacturer and supplier to the Chinese military. It is based in Nanchang, Jiangxi and is a subsidiary of ...

fighter-trainer. The AI-25TLK is also licensed built in the People's Republic of China as the WS-11. Another variant of the AI-25, is the AI-25TLSh in the 1990s, which underwent flight testing by the

Ukrainian Ministry of Defense Ukrainian may refer to: * Something of, from, or related to Ukraine * Something relating to Ukrainians, an East Slavic people from Eastern Europe * Something relating to demographics of Ukraine in terms of demography and population of Ukraine * So ...

in 2002. Ivchenko-Progress is currently marketing the AI-25TLSh as an upgrade to existing L-39 and JL-8 operators that would extend the service life of the aircraft and improve performance. The latest AI-25 is the AI-25TL Series 2 designed for the Mikoyan MiG-AT. For the demand of a stronger turbofan engine by Turkey for its jet-powered

Bayraktar MIUS Bayraktar may refer to: *Bayraktar (surname) *Bayraktar, Bayburt, a village in Turkey *Bayraktar UAV, a brand of Turkish drone **Bayraktar (song) "Bayraktar" is a Ukrainian patriotic propaganda song that became popular after its release on 1 ...

UAV the Ukrainian company developed the stronger AI-25TLT variant

Variants

PZL M-15 Belphegor at Central Air Force Museum Monino pic1

;AI-25: ;AI-25A: ;AI-25TL: ;AI-25TL series 2 ; ;AI-25TLT: (

Black Sea Shield Black is a color which results from the absence or complete absorption of visible light. It is an achromatic color, without hue, like white and grey. It is often used symbolically or figuratively to represent darkness. Black and white have o ...

- turbofan) The AI-25TLT licence-built by Turkish-Ukrainian joint venture BSS based in Istanbul for the

: ;AI-25TLK: ;AI-25TLSh: ;AI-25W: ;AI-25WM: ;WS-11: (WoShan - turbofan) The AI-25TLK licence-built in China for the

;Walter Titan: (AI-25WM) ;Walter Sirius:

Applications

Comp Air Jet The Comp Air Jet is an American eight-seat, low-wing, pressurized, tricycle undercarriage, turbofan-powered civil utility aircraft marketed by Comp Air for amateur construction.Downey, Julia: ''2008 Kit Aircraft Directory'', Kitplanes, Volume ...

Hongdu JL-8 The Hongdu JL-8 (Nanchang JL-8), also known as the Karakorum-8 or K-8 for short, is a two-seat intermediate jet trainer and a light attack aircraft designed in the People's Republic of China by China Nanchang Aircraft Manufacturing Corporatio ...

KB SAT SR-10 The KB SAT SR-10 is a prototype Russian single-engine jet trainer aircraft, fitted with forward-swept wings. It first flew in 2015 and is being offered to the Russian Air Force and for export. Design and development The Russian design bureau KB ...

Specifications (AI-25TL)

References

External links