Pages after pages of this thread and Teja thread are full of un-substantiated claims and you are not interested!..... anyhow.
Context of my reply, was the engine being the failure of Tejas project and you nitpick extra stuff.
Well, to be very clear, JF-17 thunder is cropped delta wing design with tail and ventricle fins... (as i understand)
While, prototype Tejas is a shoulder mounted, tailless cranked delta wing design.
Both were meant to be light maneuverable aircrafts, considering interceptions of low altitude with quick take off.
Amateurs saw delta wings of Tejas as design fail from the day one and were quick in pointing it on internet. Initially, India designers refused but when Tejas failed to meet IAF's requirement, than they started with blaming it on sabotage, continuing to US sanctions and than turned to US engine. with funny claims as 'under power engine' how can any engine be under power? its your design which describe the required power or you adjust your design to the available engine!
When Indians started this project, F404 was even less powered, where it stands today and when second engine was not enough, they turned to third (new) and even more power full US engine F-414
Anyhow, after few years of internet discussions and launch of JF-17, Indians started posting copies of future blks. of JF-17 design as Teja / LCA-2 (to cover their shame they may call it PEJA / MRCA etc.)
Pictures of so called LCA-2 (surprisingly a cropped delta wing!) started to appear on defence.pk, after the picture of JF-17 referred as blk-3 was released... see it in @
Munir 's ever mocking avatar (stealth nose, with twin tail fins) Which is an acknowledgement of superior design of JF-17, Indian impressiveness of it and design flaws in Tejas wing design.
There is actually no room for discussion, about what lead to Tejas failure, to be precise, Tejas wings are failed copy attempt of mirrage and saab vigen.
Hence, I see resting Tejas coffin at the shoulder of its engine, is huge coverup, and blaming it on Kaveri (which exist only on paper) is even more shameless coverup, because later was even less powered engine than F-404.
I would like to add there are strong indications, that India is getting inputs from JF-17 design and its project management concept.