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The Vedeneyev M14P is a Russian nine-cylinder, four-stroke, air-cooled, petrol-powered
radial engine
The radial engine is a reciprocating type internal combustion engine configuration in which the cylinders "radiate" outward from a central crankcase like the spokes of a wheel. It resembles a stylized star when viewed from the front, and is ca ...
. Producing , its design dates from the 1940s (Kotelnikov 2005), and is itself a development of the Ivchenko AI-14
The Ivchenko AI-14 is a nine-cylinder, air-cooled, radial piston engine designed in the Soviet Union to power aircraft.
A variant known as the M462 was produced under license by Avia.
Variants
;AI-14:
;AI-14R:Underwent state trials in Decembe ...
engine. The engine has been used extensively by the Yakovlev
The JSC A.S. Yakovlev Design Bureau (russian: ОАО Опытно-конструкторское бюро им. А.С. Яковлева) is a Russian aircraft designer and manufacturer (design office prefix Yak). Its head office is in Aeroport D ...
and Sukhoi
The JSC Sukhoi Company (russian: ПАО «Компания „Сухой“», ) is a Russian aircraft manufacturer (formerly Soviet), headquartered in Begovoy District, Northern Administrative Okrug, Moscow, that designs both civilian and milita ...
Design Bureaus. The M14P is also used in some experimental aircraft and kit designs such as the Murphy Moose
The Murphy Moose is a Canadian high-wing utility light aircraft produced in kit form by Murphy Aircraft of Chilliwack, British Columbia for amateur construction. The Moose can be purchased as a "quick-build" kit which comes partly pre-assem ...
, Radial Rocket, Pitts Model 12
The Pitts Model 12 (also known by its nicknames "Bolshoi", "Macho Stinker", "Pitts Monster") is a high performance aerobatic biplane designed around the Vedeneyev M14P/PF engine. The aircraft can be built from plans or as a kitplane, or can be ...
, and others.
The M14PF is a version of the M14P.
Design and development
The engine's intake system uses a gear driven supercharger and an automatic-mixture typecarburetor
A carburetor (also spelled carburettor) is a device used by an internal combustion engine to control and mix air and fuel entering the engine. The primary method of adding fuel to the intake air is through the venturi tube in the main meteri ...
. Power is transmitted to the propeller via a reduction gearbox.
In addition to the carburetor, the engine has a speed governor, two magnetos, mechanical fuel pump, generator, and an oil pump. It is started pneumatically, and remains fully operational during inverted flight. Unlike most American piston-type aero-engines, which turn to the right (clockwise) when viewed from the cockpit, the M14P rotates to the left (counter-clockwise), like most British-designed radials of the World War II era.
A factory modification to the supercharger gearing results in the engine producing 400 hp, while non-factory modifications have it producing as much as 460 hp. Such non-factory engines may also incorporate other upgrades, such as electric starters and electronic ignition.
When operated in a certified aircraft, the TBO (Time Between Overhauls) for the M14P engine is 750 hours initially, and every 500 hours thereafter. On experimental aircraft
An experimental aircraft is an aircraft intended for testing new aerospace technologies and design concepts.
The term ''research aircraft'' or ''testbed aircraft'', by contrast, generally denotes aircraft modified to perform scientific studies, ...
, the engines are often run to their complete 2250-hour design life before overhaul.
The M14-V26 variant has been developed exclusively for the Kamov Ka-26
The Kamov Ka-26 (NATO reporting name Hoodlum) is a Soviet light utility helicopter with co-axial rotors.
Development
The Ka-26 entered production in 1969 and 816 were built. A variant with a single turboshaft engine is the Ka-126. A twin turb ...
, where "V" stands for vertolet (helicopter) and "26" for Ka-26. Power is rated at 239 kW (325 HP) for take-off. The engine has no integral gearbox; instead, the power is transmitted to the main reduction gearbox via an interconnect shaft.
It currently seems to be manufactured only at Voronezh Mechanical Plant
Voronezh Mechanical Plant (Russian: , ''ВМЗ'') is a Russian engine and heavy machinery manufacturing plant. It is located in the city of Voronezh, in the Voronezh Oblast.
History
Voronezh Mechanical Plant started as a diesel engine manufacturi ...
.
"Vedeneyev's first engine was the AI-14RF, which produced 300 hp and this in turn led to the M14P, which was introduced in its Series I form in the early 1970s. This produced 360 hp, and Series II came out in the early 1980s, still delivering 360 hp, but with a variety of small internal improvements."
The Laros design bureau, building the Laros-31 aerobatic sports airplane, plans to transfer the assembly of the M14 from Romania to Russia.
Applications
Specifications (M14P)
See also
References
* YAK-55M Operator Handbook * M14 Log books * Vladimir Kotelnikov (2005) Russian Piston Aero Engines. The Crowood Press, Wiltshire. {{DEFAULTSORT:Vedeneyev M14p Aircraft air-cooled radial piston engines 1960s aircraft piston engines Soviet and Russian aircraft engines