i think the only part left is the engine btw i view this differently even if we make 100% or 25% the profits would be taken by russia too since they own 49.5% of brahmos aerospace so if the missile is being cheaper to import from russia take things gradually like we do ,no need to spend so much into rnd (since most of it is spended by us in brahmos aerospace) right away
It is never about cost in defence. Defence is a life or death situation. One does not count the cost. It is about scaling. Indigenous weapons can be scaled drastically when in need. But imported weapons will be restricted by foreign suppliers. It will be like Iran-Iraq war where USA was supplying to both sides just to get both iran & Iraq to destroyn& weaken each other while USA makes all the gains
i get it completly but i think we undermine our production capacity too we sold 90000 (40000 in 2017,50000 in 2019) shells to uae while doing our usual consumption too at the lowest i assume the 15 day stock we maintain = 5000x15=45000 shell (At the very least) so i assume every year 180000 shells to be manufactured since we place orders in quaters i guess that just shells replaced we must fire a lot in practice and evaluation too so 250000 per annum would be the very least production capacity right now in peace time which could be overwelmingly increased in war time (all this calculation is very vague and may not be true)
Any indigenous weapon can be scaled. All defence production has huge idle capacity as backup and this is why defence weapons cost is overinflated. But imported weapons will be subject to foreign politics.
I think India already has an indigenous liquid ramjet for Brahmos.. and hence Russia was in no position to deny Brahmos sale to philippines, inspite of Russia's close ties to China.. It was probably India telling Russia, we either sell Brahmos with indigenous engine to Philippines, or you can agree to the sale with Russian engine , and receive your cut..
India has started Brahmos NG project already. It is likely that India has the ramjet engine. Since the engine is not really high tech as compared to the guidance, design etc and the fact that India has been studying it for 20+ years, it is highly likely that India has its own engines. If that is the case, during wars, India will be able to mass manufacture in huge scales as per needs and is a good thing.
But regarding philippines, I don't think India would have sold high end missiles as Philippines is still USA ally although after Dueterte it has been shifting clsoer to China/Russia. There is still a risk that USA can reverse engineer Brahmos via Philippines. It is likely sale from Russia the Onix missile indirectly routed via India as Brahmos. Philippines was about to buy Russian missiles when USA-EU sanctioned Russia. Philippines is wary of breaching sanctions & used indirect path