Because Israel has a head start of 15 years in developing various parts of ATGMs. We are directly jumping to third generation of ATGMs. There is a serious learning curve.
The Nag project gave way for multiple projects from Helina to SANT. Which will all reach production in the next five years.
That's why I said LR is the evolution of the original Spike aka MR. There will be subsequent longer-ranged versions of MPATGM.
No, LR is heavier than MPATGM.
MPATGM and LR both are 14 kg missiles. But with the launcher, the complete system is 45 kg and 29kg for LR and MPATGM respectively. It is the cost of a longer range. LRII which you became aware of the magic of google is just 2 years old development and its yet to be tested indian army. It would be still heavier with longer range.
It's because of the heavier warhead. These specifications are based on the requirement of the user. It can be optimized for range if we are competing for exports against spike. In fact, Nag locked on a target at 5km as back as 2010.
15 km of ER2 is from helicopters with the use of two-way RF data link which we do not have a requirement. Which can be achieved if we want to. In fact, Nag variants come with Mmw seeker for accuracy which is not available on spike. Which is going in the direction of even advanced multi-mode
brimestone.
Nag would be the last to enter production from the Integrated Guided Missile Development Programme (IGMDP). Last five years it was trying to improve IIR seeker to work on impossible conditions of desert heat. IA could have ordered it in batches if they want it to. But they didn't !. If you observe the last few years of missile development. The development of every class of missiles has fastened up because we now have the technological base. New members of the ATGM family MPATGM and SANT has been tested 3-4 times in last few years. The same goes for SAMs, QRSAM is completing trials fast with regular trials.
They had a test even today as i write this.
Comparing apples to oranges and assuming everything Indian as sub per is the basic Instinct of many. Additional points if its from an NRI. Remember these snarky comments about being late or outdated, time is running out.
@hellbent @Gautam