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-60 K (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).The AV-60 K (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).


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 AV-60K (P) type variable pitch propeller has a total of eight propeller .The AV-60K (P) type variable pitch propeller has a total of eight propeller .

 

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. 

 


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) - -




PHOTOS PKuznetsov NK-12