The Klimov VK-107 was a V-12 liquid-cooled piston aircraft engine used by

Soviet The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

aircraft during

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

Development

The VK-107 was developed from the M-105 and VK-106. To achieve a greater power output, each cylinder now had four valves (two intake and two exhaust),

crankshaft A crankshaft is a mechanical component used in a reciprocating engine, piston engine to convert the reciprocating motion into rotational motion. The crankshaft is a rotating Shaft (mechanical engineering), shaft containing one or more crankpins, ...

and camshafts were completely revised, and a new

supercharger In an internal combustion engine, a supercharger compresses the intake gas, forcing more air into the engine in order to produce more power for a given displacement (engine), displacement. It is a form of forced induction that is mechanically ...

design was implemented. Although the engine could have been ready for production as early as 1942, the

s' factories lacked the capacity to produce a brand new design. Thus, the less powerful Klimov VK-105PF and VK-105PF2 V12 engines were built instead. However, the appearance of

Luftwaffe The Luftwaffe () was the aerial warfare, aerial-warfare branch of the before and during World War II. German Empire, Germany's military air arms during World War I, the of the Imperial German Army, Imperial Army and the of the Imperial Ge ...

Messerschmitt Bf 109G with Daimler-Benz DB 605 engine in 1943 created an urgent demand for a more powerful engine. VK-107A was put into production in 1944 and was used on Yak-9U fighters. The engine was not well liked by either pilots or mechanics – it had a life expectancy of only 25 hours and war emergency power was almost never used for fear of decreasing this even more. The engine was also difficult to service, in part because its exhaust headers were on the inside of the cylinder banks, the reverse placement of most V-type liquid-cooled engine designs.Kotelnikov 2005, p. 143.

Variants

''Data from'' Aircraft engines of the World 1953 and Russian piston aero engines ;M-107: (M-107P) Initial designation, produced 1941-1942; 686 built. ;VK-107:Prototypes with take-off rating of ;VK-107A: 1942 production version without water-injection with military (high) rating of at 2800 rpm and , remained in production until 1948 ;VK-107B:with water injection ;VK-107R: version for hybrid piston- motorjet powered Mikoyan-Gurevich I-250 and Sukhoi Su-5 fighters fitted with the Kholshchevnikov VRDK ;VK-107 coupled:A projected coupled powerplant driving contra-rotating propellers ;VK-108:attempt to further develop VK-107 with a rating of for takeoff, used on several

Yakovlev Yak-3 The Yakovlev Yak-3 (Russian language, Russian: Яковлев Як-3) is a single-engine, single-seat World War II Soviet Union, Soviet fighter aircraft, fighter. Robust and easy to maintain, it was much liked by both pilots and ground crew.Glan ...

and Myasishchev DB-108 prototypes but did not enter production. ;VK-108F:Boosted VK-108 ;VK-109: 1945-6 development of the VK-108, planned for use on the Myasishchev VB-109 bomber.

Applications

* Mikoyan-Gurevich MiG-7 *

Petlyakov Pe-2 The Petlyakov Pe-2 ( — nickname «Пешка» (Pawn); NATO reporting name: Buck) was a Soviet Union, Soviet twin-engine dive bomber used during World War II. One of the outstanding tactical attack aircraft of the war,Ethell 1996, p. 152. it ...

* Yakovlev Yak-9

Specifications (VK-107B)

References

Bibliography