.jpg "Kuznetsov NK-12 turboprop engine © Konstantinos Panitsidis")
Photos from the personal collection of Konstantinos Panitsidis
Technical specifications 
Photos 
Video
This engine is mainly intended for aircraft of the Tu-95 category (and for all versions of the Tu-142 and for civil airliners of the Tu-114 type), and has also been installed on aircraft such as the An-22 and the A-90 Orlyonok type wing-in-ground-effect, (ekranoplan).
The NK-12 (MV/MP) turboprop engine carries a large four-bladed contra-rotating propellers, AV-60K (P) or AV-60N variable pitch propeller, fixed speed, 5,6 m diameter. Propellers weight is 1.190 kg (front row 518 kg and rear row 637 kg).
The AV-60K (P) type variable pitch propeller has a total of eight propeller (the front row is equipped with four propeller and the rear row has another four propeller), with a rotation speed of 736 rpm, which counter-rotate against each other (the front row - rotates in the positive direction and the back row - rotates in the opposite direction). Profile of duralumin propeller NACA-16.
The engine has an independent oil tank with a total capacity of 135 liters. Apart from this, the engine is made up of other systems such as: two GSR-1800M DC generators, SGO-30U AC generator, AK-150NK air compressor, KTA-14N fuel control device, fuel pumps and other systems. The propulsion system is started by the airport's 27V generators or by a type TS-12M turbine starter.
The aviation fuel it uses is kerosene type T-1, T-2 or TS-1.
Modification's:
| Jumo 022 | German version of the engine with eleven stage compressor. |
| TV-2 | Production version, was used in limited quantities. |
| 2TV-2F | Twin engine based on TV-2. The tests ended in failure. |
| TV-12 (ΝΚ-12) | First production version. It was originally intended for the "U" military transport aircraft, but the project was closed. |
| ΝΚ-12Μ | High power turboprop engine.Initial test tests were carried out in September 1955. State tests passed on June 19, 1956. |
| ΝΚ-12ΜΑ | The modification of the engine is designed for An-22 type aircraft with an AB-90 propeller with a diameter of 6.2 m. |
| NK-12MV | The engine is intended for installation on aircraft: Tu-95K, Tu-114, Tu-126, Tu-142. The engine is equipped with propellers with a diameter of 5.6 m and a weigh of 1.155 kg. |
| NK-12MK | Modification for the WIG A-90 Eaglet. |
| NK-12MP | Turboprop for use on Tu-95MS and Tu-142 strategic bombers. Turboprop entered service in 1979. The NK-12MP engine was developed on the basis of the NK-12MV series 4. In 1987, the engine was modified to increase its service life, new drives were used for more powerful generators, which allowed the engine to operate in high humidity conditions. The engine was produced under the index as NK-12MP series 2 or NK-12MPT. |
| NK-16 (TV-16) | High power turboprop 16.000 hp. |
| NK-12 ST, NK-14ST | Drive unit for gas pumping installation. |
| NK-14E | Electric generator drive unit in block-modular power plants. |
TECHNICAL SPECIFICATIONS
| Turboprop engine | NK-12 | NK-12M |
| Fuel | T-1, T-2, TS-1 | T-1, T-2, TS-1 |
| Oil | - | - |
| Propeller shaft power, take-off power rating | 12.500 h.p. | 15.000 h.p. |
| Propeller shaft power, cruise power (H=11000 m, Mf=0,68) | 6.500 h.p. | 6.500 h.p. |
| Specific fuel consumption, take-off power rating | 0,225 kg/h.p.*h | - |
| Specific fuel consumption, cruise power | 0,165 kg/h.p.*h | 0,158 kg/h.p.*h |
| Pressure ratio, take-take-off power rating | 9,5 | 9,5 |
| Rotation frequency | 8300 rpm | - |
| Temperature of the gas at the turbine intake, take-off power rating | 1.150 K | 1.150 K |
| Air flow rate, take-off power ratingς | - | - |
| Compressor rotation frequency low-pressure, take-off power rating | - | - |
| Weight (without propellers) | 2900 kg | 2900 kg |
| Propeller diameter | 5600 mm | 5600 mm |
| Engine diameter | 1005 mm | 1005 mm |
| Lenght | 6000 mm | 6000 mm |
| Service life limit (assigned operating time) | 150 h | 300 h |
| Overhaul operation time (TBO) | - | - |
