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 | Soviet Union |
| Manufacturer | Ivchenko-Progress (design) NPC Saljut and Motor Sich (manufacture) Aerosila (propeller and gearbox) |
| First run | 1988: 48 |
| Major applications | Antonov An-70 Antonov An-180 Beriev A-42 |
| Number built | 20 (2001) |
| 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. The gas generator was designed using experience from the Lotarev D-36 turbofan. 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.