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Ishikawajima-Harima F3

February 08, 2023

The Ishikawajima-Harima Heavy Industries (IHI) F3 is a low bypass turbofan engine developed in Japan by Ishikawajima-Harima Heavy Industries for the Kawasaki T-4 jet trainer aircraft. The first prototype engine, the XF3, was manufactured in 1981 and first flew in the XT-4 in July 1985. About 550 have been built.[1]

F3
IHI F3 Turbofan Engine
Type Turbofan
National origin Japan
Manufacturer IHI Corporation
First run 1981
Major applications Kawasaki T-4
Number built ~550[1]

Design and development

Ishikawajima-Harima began developing a small turbofan engine in the late 1970s as a competitor for the new jet trainer aircraft being developed by Kawasaki Heavy Industries. The developmental engine was named the XF3, and it was selected over the SNECMA Turbomeca Larzac in 1982 to power the XT-4 trainer. The early developmental models of the engine produced 2,600 pounds-force (12 kN) of thrust, but later models (including the model selected for the XT-4) produced 3,600 lbf (16 kN) of thrust.[2]

The production engine was designated the F3-30 (alternatively, the F3-IHI-30), and it first flew in the XT-4 aircraft in 1985. Production of the qualified engine also began in 1985.[3]

After the engine and aircraft were in production there were several incidents where one or two of the high pressure turbine blades failed, forcing the aircraft to make emergency landings.[4] An investigation revealed that the turbine section was suffering from a vibration resonance problem, leading to the turbine blade failures. The blades were strengthened and modified to dampen the vibrations. The engine, and the aircraft, returned to service in 1990.[5]

Beginning in 1999, IHI began upgrading the fielded engines with a new high-pressure turbine to increase their service life. This variant of the engine was known as the F3-IHI-30B.[1]

In 2003, IHI began updating the engine with a more advanced Full Authority Digital Engine Control (FADEC). This updated engine was designated the F3-IHI-30C.[1]

XF3-400

Soon after IHI began working on the XF-3, they began developing a more powerful variant of the engine as a technology demonstrator for a theoretical supersonic fighter. This engine was designated the XF3-400. It was designed to be a higher performance, afterburning version of the XF-3, producing around 7,600 lbf (34 kN) of thrust. One distinctive quality of this engine was that it was to have a thrust-to-weight ratio of 7:1, higher than any similarly sized engine.[6]

Work on this engine began in earnest in 1986, and a demonstrator engine was built and tested in 1987. IHI was formally awarded a contract for the engine in 1992, after spending the previous years developing and testing the engine internally.[6]

The primary difference between the XF3-400 and the standard F3-30 is the inclusion of an afterburner. Adding the afterburner is the primary reason why the maximum thrust of the -400 is much higher than the -30. Other changes included compressor and turbine blades that were aerodynamically optimized using 3D computational fluid dynamics techniques, and improved temperature performance in the high-pressure turbine.[6]

A 1998 report revealed that thrust vectoring was also being integrated into the XF3-400.[7]

Design

The F3 is a two-shaft (or two spool) low-bypass turbofan. It features a two-stage fan (low-pressure compressor) on the low-pressure shaft, followed by a five-stage high-pressure compressor on the high-pressure shaft. The engine uses an annular combustor, which feeds a single-stage high-pressure turbine followed by a single-stage low-pressure turbine. The XF3-400 variant includes an afterburner after the low-pressure turbine, the production F3 does not.[6]

The two-stage fan uses wide chord blades, and both the production F3 and the advanced XF3-400 use the same fan.[3][6] Unlike the fan, the five-stage compressor differs between the F3 and the XF3-400, with the advanced XF3-400 benefiting from 3D computational fluid dynamics (CFD) improvements.[6]

The high-pressure turbine blades are single-crystal blades, and they are cooled by a thin film of air from inside of the blades. The low-pressure turbine blades, like the high-pressure compressor, were improved between the F3 and the XF3-400 using 3D CFD.[6]

Both the F3 and the XF3-400 use a FADEC for engine control.[6]

Variants

XF3
Early developmental designation of what became the F3-IHI-30. Several different configurations were considered in this phase of the program.
F3-IHI-30
Production variant of the engine. Used by the Kawasaki T-4.
F3-IHI-30B
Production version of the engine with an upgraded high pressure turbine.
F3-IHI-30C
Production version of the engine with an improved FADEC.
IHI-17
XF3-400
Supersonic technology demonstrator variant of the engine. Much higher thrust than the production F3. Includes an afterburner and several aerodynamic upgrades.

Applications

Specifications (F3-IHI-30)

Data from [8]

General characteristics

  • Type: twin-spool turbofan
  • Length: 79 in (200 cm)
  • Diameter: 25 in (63 cm)
  • Dry weight: 750 lb (340 kg)

Components

  • Compressor: axial, 2 stage, low pressure compressor, 5 stage high pressure compressor
  • Combustors: annular
  • Turbine: single stage high pressure turbine, two stage low pressure turbine

Performance

See also

Related development

Comparable engines

Related lists

References

 
Wikimedia Commons has media related to Ishikawajima-Harima F3.
  1. ^ a b c d IHI F3. Jane's Aero Engines. (subscription page[permanent dead link]) Edited January 13, 2009. Accessed February 9, 2010.
  2. ^ Japanese trainer engine selected. (1982, December 11). Flight International, 1677. Accessed February 4, 2010.
  3. ^ a b Hamada, T., Akagi, M., Toda, D., Shimazaki, H., & Ohmomo, M. (1989). T-4 Inlet/Engine Compatibility Flight Test Results. Presented at the AIAA/ASME/SAE/ASEE 25th Joint Propulsion Conference, Monterey, CA: American Institute of Aeronautics and Astronautics.
  4. ^ Japan Tackles F3 engine problems. (1989, November 29). Flight International, 16. Accessed February 4, 2010.
  5. ^ Japan finds fix for T-4 trainer. (1990, January 17). Flight International, 27. Accessed February 4, 2010.
  6. ^ a b c d e f g h i Kashikawa, I., & Akagi, M. (1995). Research on a High Thrust-to-Weight Ratio Small Turbofan Engine. Presented at the 31st AlAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, San Diego, CA: American Institute of Aeronautics and Astronautics.
  7. ^ Japan stalls future fighter demonstrator. (1998, October 21). Flight International. Retrieved February 4, 2010.
  8. ^ "IHI F3". 2010 Aerospace Sourcebook. Aviation Week & Space Technology. (subscription page). Accessed February 2, 2010.

February 08, 2023
ishikawajima, harima, ishikawajima, harima, heavy, industries, bypass, turbofan, engine, developed, japan, ishikawajima, harima, heavy, industries, kawasaki, trainer, aircraft, first, prototype, engine, manufactured, 1981, first, flew, july, 1985, about, have,. The Ishikawajima Harima Heavy Industries IHI F3 is a low bypass turbofan engine developed in Japan by Ishikawajima Harima Heavy Industries for the Kawasaki T 4 jet trainer aircraft The first prototype engine the XF3 was manufactured in 1981 and first flew in the XT 4 in July 1985 About 550 have been built 1 F3IHI F3 Turbofan EngineType TurbofanNational origin JapanManufacturer IHI CorporationFirst run 1981Major applications Kawasaki T 4Number built 550 1 Contents 1 Design and development 1 1 XF3 400 1 2 Design 2 Variants 3 Applications 4 Specifications F3 IHI 30 4 1 General characteristics 4 2 Components 4 3 Performance 5 See also 6 ReferencesDesign and development EditIshikawajima Harima began developing a small turbofan engine in the late 1970s as a competitor for the new jet trainer aircraft being developed by Kawasaki Heavy Industries The developmental engine was named the XF3 and it was selected over the SNECMA Turbomeca Larzac in 1982 to power the XT 4 trainer The early developmental models of the engine produced 2 600 pounds force 12 kN of thrust but later models including the model selected for the XT 4 produced 3 600 lbf 16 kN of thrust 2 The production engine was designated the F3 30 alternatively the F3 IHI 30 and it first flew in the XT 4 aircraft in 1985 Production of the qualified engine also began in 1985 3 After the engine and aircraft were in production there were several incidents where one or two of the high pressure turbine blades failed forcing the aircraft to make emergency landings 4 An investigation revealed that the turbine section was suffering from a vibration resonance problem leading to the turbine blade failures The blades were strengthened and modified to dampen the vibrations The engine and the aircraft returned to service in 1990 5 Beginning in 1999 IHI began upgrading the fielded engines with a new high pressure turbine to increase their service life This variant of the engine was known as the F3 IHI 30B 1 In 2003 IHI began updating the engine with a more advanced Full Authority Digital Engine Control FADEC This updated engine was designated the F3 IHI 30C 1 XF3 400 Edit Soon after IHI began working on the XF 3 they began developing a more powerful variant of the engine as a technology demonstrator for a theoretical supersonic fighter This engine was designated the XF3 400 It was designed to be a higher performance afterburning version of the XF 3 producing around 7 600 lbf 34 kN of thrust One distinctive quality of this engine was that it was to have a thrust to weight ratio of 7 1 higher than any similarly sized engine 6 Work on this engine began in earnest in 1986 and a demonstrator engine was built and tested in 1987 IHI was formally awarded a contract for the engine in 1992 after spending the previous years developing and testing the engine internally 6 The primary difference between the XF3 400 and the standard F3 30 is the inclusion of an afterburner Adding the afterburner is the primary reason why the maximum thrust of the 400 is much higher than the 30 Other changes included compressor and turbine blades that were aerodynamically optimized using 3D computational fluid dynamics techniques and improved temperature performance in the high pressure turbine 6 A 1998 report revealed that thrust vectoring was also being integrated into the XF3 400 7 Design Edit The F3 is a two shaft or two spool low bypass turbofan It features a two stage fan low pressure compressor on the low pressure shaft followed by a five stage high pressure compressor on the high pressure shaft The engine uses an annular combustor which feeds a single stage high pressure turbine followed by a single stage low pressure turbine The XF3 400 variant includes an afterburner after the low pressure turbine the production F3 does not 6 The two stage fan uses wide chord blades and both the production F3 and the advanced XF3 400 use the same fan 3 6 Unlike the fan the five stage compressor differs between the F3 and the XF3 400 with the advanced XF3 400 benefiting from 3D computational fluid dynamics CFD improvements 6 The high pressure turbine blades are single crystal blades and they are cooled by a thin film of air from inside of the blades The low pressure turbine blades like the high pressure compressor were improved between the F3 and the XF3 400 using 3D CFD 6 Both the F3 and the XF3 400 use a FADEC for engine control 6 Variants EditXF3 Early developmental designation of what became the F3 IHI 30 Several different configurations were considered in this phase of the program F3 IHI 30 Production variant of the engine Used by the Kawasaki T 4 F3 IHI 30B Production version of the engine with an upgraded high pressure turbine F3 IHI 30C Production version of the engine with an improved FADEC IHI 17 XF3 400 Supersonic technology demonstrator variant of the engine Much higher thrust than the production F3 Includes an afterburner and several aerodynamic upgrades Applications EditKawasaki T 4Specifications F3 IHI 30 EditData from 8 General characteristics Type twin spool turbofan Length 79 in 200 cm Diameter 25 in 63 cm Dry weight 750 lb 340 kg Components Compressor axial 2 stage low pressure compressor 5 stage high pressure compressor Combustors annular Turbine single stage high pressure turbine two stage low pressure turbinePerformance Maximum thrust 3 680 lbf 16 4 kN Overall pressure ratio 11 1 Bypass ratio 0 9 1 6 Specific fuel consumption 0 7 lb lbf h Thrust to weight ratio 4 9See also EditRelated development IHI Corporation XF5 IHI Corporation F7 IHI Corporation XF9Comparable engines SNECMA Turbomeca Larzac NPO Saturn AL 55Related lists List of aircraft enginesReferences Edit Wikimedia Commons has media related to Ishikawajima Harima F3 a b c d IHI F3 Jane s Aero Engines subscription page permanent dead link Edited January 13 2009 Accessed February 9 2010 Japanese trainer engine selected 1982 December 11 Flight International 1677 Accessed February 4 2010 a b Hamada T Akagi M Toda D Shimazaki H amp Ohmomo M 1989 T 4 Inlet Engine Compatibility Flight Test Results Presented at the AIAA ASME SAE ASEE 25th Joint Propulsion Conference Monterey CA American Institute of Aeronautics and Astronautics Japan Tackles F3 engine problems 1989 November 29 Flight International 16 Accessed February 4 2010 Japan finds fix for T 4 trainer 1990 January 17 Flight International 27 Accessed February 4 2010 a b c d e f g h i Kashikawa I amp Akagi M 1995 Research on a High Thrust to Weight Ratio Small Turbofan Engine Presented at the 31st AlAA ASME SAE ASEE Joint Propulsion Conference and Exhibit San Diego CA American Institute of Aeronautics and Astronautics Japan stalls future fighter demonstrator 1998 October 21 Flight International Retrieved February 4 2010 IHI F3 2010 Aerospace Sourcebook Aviation Week amp Space Technology subscription page Accessed February 2 2010 Retrieved from https en wikipedia org w index php title Ishikawajima Harima F3 amp oldid 1127943320, 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