D-27 Propfan engine

In numbers  Through the lens  Video

This engine is mainly intended for the Antonov, An-70, An-70T, An-180 and Beriev Be-42 aircraft, but also for aircraft with a low fuel consumption requirement, such as passenger aircraft.

The Progress D-27 Propfan turboprop engine has a contra-rotating propellers, SV-27 type variable pitch propellers of Russian origin and made entirely of composite materialы with a diameter of 4,5 meters.

Its front row is equipped with eight propellers and the rear row has six. All this combination yields a maximum power of 14.000 horsepower (each engine). In addition to these, the engine has the lowest fuel consumption (130 grams for every ton of cargo per kilometer). 

Diameter of contra-rotating propellers 4.500 mm. Rotational frequency take-off condition 1.000 RPM. Weight 1.100 kg. Takeoff power 13.400 h.p. Thrust (Vfl=0) 12.150 kgf.

The design parameters (characteristics) of the D-27 have:- 
- parameter stability ( very low fuel consumption in all operating phases high reliability)
- reliability
- long service life
- low labor intensity of manufacturing and maintenance
- low emission of pollutants
- permissible noise level 

Technical specifications

Photos D-27 Propfan engine