Progress D-27

D-27
Progress D-27 propfan engine installed on an Antonov An-70 military airlifter at the 1997 MAKS Air Show.
Type Propfan
National origin Ukraine
Manufacturer Ivchenko-Progress (design)
NPC Saljut and Motor Sich (manufacture)[1]
Aerosila (propeller and gearbox)[2]
First run 1988[3]: 48 
Major applications Antonov An-70
Antonov An-180
Beriev A-42
Number built 20 (2001)[4]
Developed from Lotarev D-36

The Progress D-27 is a three-shaft propfan engine developed by Ivchenko Progress, and manufactured by Motor Sich in Ukraine.[5] The gas generator was designed using experience from the Lotarev D-36 turbofan.[6] The D-27 engine was designed to power more-efficient passenger aircraft such as the abandoned Yakovlev Yak-46 project, and it was chosen for the Antonov An-70 military transport aircraft. As of 2019, the D-27 is the only contra-rotating propfan engine to enter service.

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  5. ^ "D-27". Motor Sich. Retrieved June 15, 2023.
  6. ^ Cite error: The named reference gunston was invoked but never defined (see the help page).