Kuznetsov NK-93

NK-93
NK-93 engine
Type Propfan
National origin Soviet Union
Manufacturer Kuznetsov Design Bureau
First run 1989[1]
Number built 11[2]
Developed from Kuznetsov NK-92[2]

The Kuznetsov NK-93 was a civilian aircraft engine, a hybrid between a turbofan and a turboprop known as a propfan. The engine was also unique in having a separate duct around the contra-rotating propellers, as most other propfans are unducted. Once described in a respected aviation encyclopedia as "potentially the most fuel-efficient aircraft jet engine ever to be tested",[3] the NK-93 was targeted for derivatives of Soviet/Russian airliners such as the Ilyushin Il-96, Tupolev Tu-204, and Tupolev Tu-330.[2] Five in-flight engine tests were conducted on the NK-93 from December 2006[4] to December 2008.[5][6][7][8]

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