The Kuznetsov NK-12 is a turboprop aircraft engine designed by the Kuznetsov Design Bureau in the 1950s. It is known for its high power output and efficiency, making it one of the most powerful turboprop engines ever built. The NK-12 is primarily used in military and civilian aircraft, including the Tupolev Tu-95 and Tu-114. This engine features a unique contra-rotating propeller system, which enhances its performance and reduces noise. The NK-12 has a maximum power output of around 15,000 horsepower, allowing it to support heavy bombers and transport aircraft effectively. Its design has influenced various other engines in the aviation industry.