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The '''AL-41F''' is a designation for two different Russian military turbofan engine variants. The '''NPO Saturn AL-41F''' is a Russian variable-bypass ratio ], designed for ] flight for the ''MFI'' (''Mnogofunktsionalni Frontovoy Istrebitel'', "Multifunctional Frontline Fighter") program, which resulted in the ]. It is considered by ] as the Russian counterpart to the ] engine which lost to the more conventional fixed-bypass YF-119 in the ] engine program. Since the cancellation of the MFI program, the '''AL-41F1S''' and '''AL-41F1''' designation was assigned to heavily upgraded ] variants that powers the ] and initial production ] stealth aircraft. The '''AL-41F''' is a designation for two different Russian military turbofan engine variants. The '''NPO Saturn AL-41F''' is a Russian variable-bypass ratio ], designed for ] flight for the ''MFI'' ("Multifunctional Frontline Fighter") program, which resulted in the ]. It is considered by ] as the Russian counterpart to the ] engine which lost to the more conventional fixed-bypass YF-119 in the ] engine program. Since the cancellation of the MFI program, the '''AL-41F1S''' and '''AL-41F1''' designation was assigned to heavily upgraded ] variants that powers the ] and initial production ] stealth aircraft.


==Design and development== ==Design and development==

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AL-41F
AL-41F1S engine
Type Turbofan
National origin Russia
Manufacturer NPO Saturn

The AL-41F is a designation for two different Russian military turbofan engine variants. The NPO Saturn AL-41F is a Russian variable-bypass ratio turbofan engine, designed for supercruise flight for the MFI ("Multifunctional Frontline Fighter") program, which resulted in the Mikoyan Project 1.44. It is considered by Jane's as the Russian counterpart to the General Electric YF120 engine which lost to the more conventional fixed-bypass YF-119 in the Advanced Tactical Fighter engine program. Since the cancellation of the MFI program, the AL-41F1S and AL-41F1 designation was assigned to heavily upgraded AL-31F variants that powers the Su-35S and initial production PAK FA stealth aircraft.

Design and development

The AL-41F program was launched in 1982, and the first prototype engine flew in a MiG-25 Foxbat testbed. Originally developed for the Mikoyan Project 1.44, 28 engines were built, however the engine did not advance beyond prototype stage and when the MiG 1.44 was cancelled.

The AL-41 designation was reused for heavily upgraded variants of the AL-31 used to power the Su-35S (Izdeliye 117S / AL-41F1A) and initial production PAK FA (Izdeliye 117 / AL-41F1) stealth aircraft. Some of the technologies of the original AL-41F were applied in the 117S and 117 engines.

Variants

A heavily upgraded version of the AL-31F is being developed for the Su-35BM and PAK FA. This engine has been named the AL-41F1S and AL-41F1. It is important to note that the AL-41F1S is not considered a part of the same AL-41 line as was planned for the Mikoyan Project 1.44 because it uses the core of the AL-31F, whereas the AL-41F utilizes an entirely different approach. The designation is present because the engine approaches the projected specifications of the AL-41F. It is also notable that the engine is capable of mounting 3D thrust vectoring nozzles for extra maneuverability.

Operators

Specifications

General characteristics

  • Type: Turbofan
  • Length: 4990 mm
  • Diameter: 1280 mm
  • Dry weight:

Components

  • Compressor: axial

Performance

See also

References

  1. http://archive.russia-today.ru/2009/no_12/12_from_backlog_01.htm
  2. http://maria-online.com/cinema/article.php?q=%D0%90%D0%9B-41%D0%A4

Bibliography

  • Butowski, Piotr. "Raptorski's Maiden Flight". Air International, Vol. 78, No 3, March 2010, pp. 30–37. Stamford, UK: Key Publishing.
  • Butowski, Piotr. "T-50 Turning and Burning over Moscow". Air International, Vol. 85, No 4, October 2013, pp. 79–82. Stamford, UK: Key Publishing.

External links

Lyulka and Saturn aircraft engines
Turbojets
Turbofans
TurbopropsAL-34
Joint developmentPowerJet: SaM146 (Turbofan)
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