There are two kind of people. optimists and pessimists. It looks like you are of the 2nd type. Developing and Aircraft engine is not as simple as making a cup of tea. Given the poor R&d that we had in metallurgy field we are bound to take time to develop an Engine . Moreover Kaveri Engine is not at all a failure we have developed an Engine thats still useful for other defense related projects and it gives us enough exposures for development of new Engines. We are already working on improving the Kaveri and result will be out for everyone to see.
If you donot mind can you please give me list of countries capable of making Engine of their own. you can count them on fingers. so we are not doing that bad either. With Economy growing we will be able to put more and more money into research and definitely future projects will keep on getting better and better .
You are trying to compare India Indian defense research with USA and European countries. Just have a look at amount of experience they all have and look at budget they have for those kind of research. Our companies are giving much better result with such a low Input.
SO I am Proud of LCA.
the development of one aircraft engine not only needs talents of designers, but also is based on the supports of industry chains,which usually take decades to be built.
developing countries like CHina and India never lack of good design.the biggest problem to them is their poor material tech and machining tech. while it usually take decades and billions of dollars to develop one kinds of good material and machining tech.
for example, Single crystal blade (SCB)is one key component to advanded engine.
before you produce SCB,you need the tech of single crytal metallurgy and advanced machining-tool tech.
West countries started related R&D in 1960s,and finished the development of SCB tech long before they started developing the engine for F16 and F15.
However, When China started to develop WS10, the related tech of SCB is "zero" in China and China had to start from scratch.
So was India's Kavery. When India started its Kavery, India in fact knew nothing about the tech "Single crystal blade" and had to start from scratch.