The South Koreans basically took the Gerrman design (214) and upgraded it with a large VLS section, this was a key requirement they evolved to have the capacity for an underwater deterrent should the need arise later.
That was the main reason AFAIK they didn't just go for an improved 214 (with...
INS Androth:
https://economictimes.indiatimes.com/news/defence/grse-delivers-second-anti-submarine-warfare-shallow-watercraft-to-indian-navy/articleshow/123869383.cms?from=mdr
Will be funny if these are refurbished and sent to India (which maybe buys more later)
https://economictimes.indiatimes.com/news/defence/russia-says-it-is-in-talks-to-supply-more-s-400-missile-systems-to-india/articleshow/123667119.cms?from=mdr
The Ministry of Defence has received a formal proposal from the Indian Air Force (IAF) to acquire 114 ‘Made in India’ Rafale fighter jets, marking what could become the largest defence procurement in India’s history...
Unlikely, I think a MLU would just involve a major overhaul of the engines. Downstream there may be production of other things that have more pressing use for newer production engines at that point as well....who knows what capacity constraints are still in play needing sound prioritisation on A...
I do not have insider info on what the exact problems are.
The "wet thrust" doesn't really matter, that is just afterburner (inefficient) operation....it ends up being a byproduct "add on" to what your dry thrust basis is.
The dry thrust is where the issues would lie, bulk of flight envelope...