Klimov VK-106

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Type	V12 inline engine
Manufacturer	Klimov
First run	1943
Number built	over 300 engines
Developed from	Klimov M-105

The Klimov M-106 was an experimental liquid-cooled V12 piston aircraft engine intended for Soviet aircraft during World War II.^[1]

Development

With the VK-105PF exhausting the potential of the M-105, Klimov prolonged its development into new VK-106 engine from 1941. Since air combat on the Eastern Front took place primarily at low altitudes (under 4,000 m {13,000 ft}), the new engine was built specifically for peak performance at those altitudes with a reduced compression ratio and a single-speed supercharger. Static testing was carried out from 27 October till 9 November 1942. Although reliable and easily installed in M-105-powered aircraft, VK-106 did not enter production because its cooling problems were not solved. Like M-105P, VK-106P could house an autocannon in the "vee" between the cylinder banks.

Applications

Yak-1b with M-106

Specifications (VK-106-1sk)

Data from Kotelnikov^[2]

General characteristics

Type: 12-cylinder supercharged liquid-cooled piston aircraft engine
Bore: 148mm (5.83 in)
Stroke: 170mm (6.69 in)
Displacement: 35.08 liters (2,140 in³)
Dry weight: 600 kg (1,320 lb)

Components

Supercharger: Gear-driven single-stage single-speed centrifugal type supercharger
Fuel type: 95-octane rating gasoline
Cooling system: Liquid-cooled

Performance

Power output:
1,007 kW (1,350 hp) at 2,600 rpm for takeoff
1,007 kW (1,350 hp) at 2,000 m (6,560 ft)
Specific power: 28.8 kW/L (0.63 hp/in³)
Compression ratio: 6.5:1
Power-to-weight ratio: 1.68 kW/kg (1.02 hp/lb)

References

Notes

↑ Gunston 1989, p. 90.
↑ Kotelnikov 2005, p. 142.

Bibliography

Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
Kotelnikov, Vladimir. Russian Piston Aero Engines. Marlborough, Wiltshire. The Crowood Press Ltd. 2005. ISBN 1-86126-702-9.

v t e Klimov aircraft engines

Piston engines	M-100 M-103 M-105 M-110 M-120 VK-106 VK-107 VK-108 VK-109 VK-110 VK-150

Turbojets	RD-45 RD-500

Turbofans	RD-33

Turboprops and turboshafts	GTD-350 TV2-117 TV3-117 TV7-117 VK-800 VK-1500 VK-2500 VK-3000

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Records	Airspeed Altitude Distance Endurance Firsts Large Most-produced aircraft Most-produced rotorcraft

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