Photos from the personal collection of Konstantinos Panitsidis
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 4500 mm. Rotational frequency take-off condition 1000 RPM. Weight 1100 kg. Take-off power 13400 h.p. Thrust (Vfl=0) 12150 kgf.
The design parameters (characteristics) of the D-27 have:
parameter stability ( very low fuel consumption in all operating phases high reliability)
long service life
low labor intensity of manufacturing and maintenance
low emission of pollutants
permissible noise level
|Fuel (Aviation grade kerosene)||RT|
|Propeller shaft power, take-off power rating||14.000 e.h.p.|
|Specific fuel consumption, take-off power rating||0,170 kg/e.h.p.*h|
|Propeller shaft power, cruise power||6.750 e.h.p|
|Specific fuel consumption, cruise power (H=11.000 m, M=0,7)||0,130 kg/e.h.p.*h|
|Pressure ratio, take-take-off power rating||22,9|
|Pressure ratio, cruise power||29,7|
|Temperature of the gas at the turbine intake, take-off power rating||1.640 K|
|Temperature of the gas at the turbine intake, cruise power||1.450 K|
|Air flow rate, take-off power rating||27,7 kg/s|
|Air flow rate, cruise power||24,4 kg/s|
|Air flow rate, cruise power maximum||12,1 kg/s|
|Compressor rotation frequency low-pressure, take-off power rating||-|
|The rotational speed of the propfan turbine take-off mode||8.934 rpm|
|Power-weight ratio||8,485 h.p/kgf|
|Energy conversion efficiency (Mf=0)||0,9|
|Diameter propellers||4500 mm|
|Weight (without the non-rotating propellers, high distortion)||1.650 kg|
|Engine diameter||1370 mm|
|Specified service life||18000 h|
|Overhaul operation time (TBO)||6000 h|