Rodion_Romanovic wrote:I thought that the M90 were a relatively new development from the 2000s (joint development from Zorya and Saturn).
Anyway they are good enough for the moment.
After all the GE LM2500 used in a lot of western navy ships is a marine derivative of the CF6 aircraft engine, which first ran in 1971. Of course it was modernised many times, but the original design is from an engine 50 years old.
If Russia will need more modern naval engines in the future, they will be able to do a naval derivative of the many new aircraft engines they are developing now, e.g the PD series or the modernised NK32
The Russian replacements for the Ukr production are by no means mere copies. They have higher operating temperatures and thus
thermodynamic efficiency. Some BS article posted on this forum claimed they were of similar efficiency. But this article is not
the Holy Bible of God's Own Truth (TM).
Funny how all of these discussions never cover actual efficiency numbers but fixate on feature gimmicks.