Ivchenko AI-24

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AI-24
IVCHENKO AI-24 (1960) used in Antonow AN26, at Flugausstellung Hermeskeil, pic2.JPG
AI-24 on display at Flugausstellung Hermeskeil
Type Turboprop
National origin Soviet Union
Manufacturer Ivchenko/ZMKB Progress
First run1958
Major applications Antonov An-24
Antonov An-26
Antonov An-30

The Ivchenko AI-24 turboprop aircraft engine was designed and developed in the late-1950s by the Ivchenko design bureau and manufactured thereafter by Motor Sich. It was designed to power Antonov's successful An-24, An-26 and An-30 aircraft series.

Contents

Design and development

In 1958, based on the experience gained in the course of designing the AI-20 turboprop engine and using advanced methods of simulation, a scaled-down turboprop engine, AI-24, rated at 2,550 hp (1,900 kW) (equivalent) was developed. [1] The engine was specifically designed to power the Antonov An-24 passenger aircraft.[ citation needed ] True to the Soviet tradition, design was kept separate from serial production which was started in 1960. The turboprop engine along with many of the bureau's other designs were manufactured at Motor Sich which is also located in Zaporozhye.

Attempts were made to also produce a turboshaft variant - for instance in 1960, eleven pre-production units of AI-24V turboshaft variants rated at 2000 hp were manufactured for powering the first two V-8 (Mi-8) prototype helicopters. However later on, due to the fact that the TV2-117 engine was selected for powering the Mi-8, the works on the AI-24V engine aborted. [2]

The AI-24A produced 1,900 kW (2,550 shp). [3]

An improved series was introduced in 1966. [3]

Each engine nacelle included a fire extinguishing system that could be set to an automatic operation mode. The AI-24 turboprop engines featured wide gas dynamic stability margin at all power conditions, altitudes and flight speeds. The most notable feature of the engine was in its operational reliability. The main advantages of the engine were simple design, high reliability, long service life and easy maintainability. [4]

The later AI-24T had water injection giving increased power output. It also introduced automatic limiting of power overloads and exhaust gas temperatures, along with vibration monitoring, automatic shutdown and feathering. [3]

Operational use

The first airplane powered by two Ivchenko AI-24 turboprops was the An-24. They drove four-bladed AV-72T constant-speed reversible propellers. [5] Early production aircraft had AI-24 engines providing 1,790 kW (2,400 shp) takeoff power each, while later production airplanes were equipped with the newer AI-24A engines. [3]

The AI-24 was later used on the Аn-26 and Аn-30 transports. [1]

The AI-24A was manufactured in large numbers in both the USSR and China. [6] The popularity and success[ according to whom? ] of Antonov's An-24 series ensured that the AI-24 turboprop engine became one of the Soviet Union's most prominent and widely distributed engines worldwide.[ citation needed ] According to SE Ivchenko Progress, 2735 airplanes and 11750 units of the AI-24 engines of various modified versions were manufactured in total before production ended.[ citation needed ]

Variants

AI-24
Initial production variant producing 1,790 kW (2,400 shp) maximum takeoff power.
AI-24A
Later Production variant with performance maintained in hot-and-high conditions. maximum takeoff power 1,875 kW (2,515 ehp).
AI-24T
Uprated variant which produced 2,103 kW (2,820 ehp) takeoff power for greater payload capability.
AI-24VT
Uprated variant produced 2,100 kW (2,820 shp) differentiated because it was coupled with an RU19A-300 APU/booster instead of the regular TG-16M auxiliary power unit (APU) turbine. It is mainly used to power the An-26.[ citation needed ]

Specifications (AI-24T)

Data from Aircraft engines of the World 1970 [7]

General characteristics

Components

Performance

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References

  1. 1 2 Fulton, K. (13 January 1979). "International Turbine Engine Directory" (pdf). Flight International. 115 (3643): 81–104. Retrieved 22 March 2019.
  2. "ГП Ивченко-Прогресс". Ivchenko-progress.com. Retrieved 2015-09-18.
  3. 1 2 3 4 Taylor, John W.R., ed. (1980). Jane's all the World's Aircraft 1980–81. London: Jane's Publishing Co. p. 719. ISBN   0-7106-0705-9.
  4. "AI-24". Motorsich.com.ua. Retrieved 2015-09-18.
  5. "RESTRICTED-TYPE CERTIFICATE DATA SHEET EASA.IM.A.351 Aircraft: Antonov 26" (PDF). easa.europa. European Aviation Safety Agency. 15 October 2009. Retrieved 22 March 2019.
  6. Gunston, Bill (1998). World encyclopaedia of aero engines (4th ed.). Sparkford, Nr Yeovil, Somerset, [England]: P. Stephens. pp. 93–94. ISBN   978-1852605971.
  7. Wilkinson, Paul H. (1970). Aircraft engines of the World 1970 (21st ed.). Washington D.C.: Paul H. Wilkinson. p. 218.