The Ivchenko-Progress AI-450S is a turboprop engine designed by Ivchenko-Progress and built by Motor Sich. It is a two-shaft design with one gas generator shaft and one free turbine shaft. The 450 hp AI-450S is used on the Diamond DA50-JP7, Bayraktar Akıncı UAV and Diamond Dart 450 and the 630 hp AI-450S-2 is used on the Evektor EV-55. The price of an AI-450 engine is roughly $236,400.
| model | AI-450S | AI-450S-2 | |
|---|---|---|---|
| Dimensions | 1,108 х 575 х 702 mm | 1,120 х 578 х 700 mm | |
| Weight, dry | 130kg (290lb) | 140kg (310lb) | |
| Take-off power | 450hp | 630hp | |
| Cruise power | 280hp | 544hp | |
| Take-off fuel consumption | 375g/kW/h | 347g/kW/h | |
| Cruise fuel consumption | 375g/kW/h | 330g/kW/h | |
| Power-to-weight at take-off | 2.62kW/kg | 3.36kW/kg |