The supplies will take place from 2021 to 2030.
defence-ua.com

The Ukrainian Ivchenko Progress state design bureau will supply the Turkish armed forces with over 500 cruise missile engines worth $600 million.
According to the company, the supply of AI-450 turboprop engines to the Akıncı operational-strategic UAV, as well as upgraded AI-25 turbojet engines to a promising unmanned fighter, will take place from 2021 to 2030, according to Defense Express. The first test flight of the new attack drone with Ukrainian engines took place on December 6, 2019. Akıncı spent 16 minutes in the air and made a smooth, automatic landing.
(C)UNIAN 2020
Well, what to say about this then?
According to a poster here, Erdogan belongs in the same group of politicians like Donald Trump. And now, business with Erdoganland, and this is not about windmills.