A recent tweet by Saurav Jha says NGMBT can be just 41T ....
How is it even possible ? Unless a very light armour is used
And armour may be light but it not must be lightly armoured
So such armour which despite of being light will be able to give adequate protection
So a breakthrough in armour technology perticularly metallergy ....
So is DRDO already achieved it otherwise how they can be so sure?
Actually if you read this paper published in the January edition of DSJ, it is basically a statsistical simulation study on vehicle configuration based on some existing data on automobile structures and its regression and ANOVA based modelling.
It gives Evolutionary design : 54 tons ;
Revolutionary design : 41 tons.
In reality when DRDO will build the prototype there will be much more. For comparison the evolutionary design seems to be a future iteration of Arjun Mk2 which weighs 68 tons.
So you can add 10-14 tons to the Revolutionary designs safely. This will include add on ERA, NERA and latest Kanchan armour, 120/130 mm smoothbore gun , latest electronics etc. Still it will fall in the 50-55 ton category similar to Armata and will be the perfect candidate for FRCV tender.
Source :
http://publications.drdo.gov.in/ojs/index.php/dsj/article/view/12182/6087