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The IAR K14 was a Romanian 14-cylinder radial aircraft engine. The IAR K14 was a licensed derivative of the French Gnome-Rhône 14K Mistral Major produced in Romania.[1]

IAR K14
A Preserved Piaggio P.XI, an Italian-built Gnome-Rhône Mistral Major
Type	Radial engine
National origin	Romania
Manufacturer	Industria Aeronautică Română
First run	1937
Major applications	IAR 80, IAR 37, IAR 39
Number built	1000
Developed from	Gnome-Rhône Mistral Major

Variants

IAR K14-I 40

IAR K14-I C32

693 kW (930 hp) engine. 44 for IAR P.24E

IAR K14-II C32

649 kW (870 hp) engine. 50 built for IAR 37, 1 built for IAR 80 prototype

IAR K14-II D32

IAR K14-III C36

690 kW (930 hp) engine. 20 built for IAR 80, 95 built for IAR 37

IAR K14-IV C32

716 kW (960 hp) engine. 30 built for IAR 80, 160 built for IAR 39, 2 built for IAR 47 prototypes

IAR K14-IV C32 1000A

764 kW (1025 hp) engine. 430 built for IAR 80A,IAR 80B,IAR 80C, IAR 81A,IAR 81B,IAR 81C

Applications

• Industria Aeronautică Română IAR P.24E
• Industria Aeronautică Română IAR 37
• Industria Aeronautică Română IAR 39
• Industria Aeronautică Română IAR 47
• Industria Aeronautică Română IAR 80
• Industria Aeronautică Română IAR 81
• Savoia-Marchetti SM 79B Romanian type

Specifications

General characteristics

• Type: Fourteen-cylinder two-row air-cooled radial engine
• Bore: 146 mm (5.748 in)
• Stroke: 165 mm (6.496 in)
• Displacement: 38.673 L (2,360 in³)
• Diameter: 1,296 mm (51.02 in)
• Dry weight: 540 kg (1,190 lb)

Components

• Valvetrain: Overhead valves
• Supercharger: Single-speed centrifugal type supercharger
• Fuel system: Stromberg carburetor
• Fuel type: 87 octane rating gasoline
• Cooling system: Air-cooled
• Reduction gear: 2:3

Performance

• Power output:
  
• 743 kW (996 hp) at 2,390 rpm for takeoff
• 821 kW (1,100 hp) at 2,390 rpm at 2,600 m (8,530 ft)
• Specific power: 21.23 kW/L (0.47 hp/in³)
• Compression ratio: 5.5:1
• Specific fuel consumption: 328 g/(kW•h) (0.54 lb/(hp•h))
• Oil consumption: 20 g/(kW•h) (0.53 oz/(hp•h))
• Power-to-weight ratio: 1.52 kW/kg (0.92 hp/lb)

See also

Related development

• Gnome-Rhône Mistral Major

Comparable engines

• Bristol Hercules
• Piaggio P.XI
• Tumansky M-87
• Tumansky M-88
• Wright R-2600

Related lists

• List of aircraft engines

References

Notes

Bibliography

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