The Kuznetsov NK-12 is a Soviet turboprop engine of the 1950s, designed by the Kuznetsov design bureau. The NK-12 drives two large four-bladed contra-rotating propellers, 5.6 m (18 ft) diameter (NK-12MA), and 6.2 m (20 ft) diameter (NK-12MV). It is the most powerful turboprop engine to enter service.
Kuznetsov NK-12
The exhaust ports of a NK-12 in an outboard nacelle on a Tu-95
NК-12МV
A pair of Kuznetsov NK-12MAs installed on an Antonov An-22
A turboprop is a turbine engine that drives an aircraft propeller.
GE T64 turboprop, with the propeller on the left, the gearbox with accessories in the middle, and the gas generator (turbine) on the right
A Rolls-Royce RB.50 Trent on a test rig at Hucknall, in March 1945
The Kuznetsov NK-12 is the most powerful turboprop to enter service
A military transport aircraft, over 2,500 Lockheed C-130 Hercules have been built