In an Armata havy brigade, would the commonality of parts esp. the chassis enable turret switching? I mean for ex: in urban combat, you want BMPTs, so you switch some of the tanks' turret with BMPT turrets while in areas that require heavy tank fire you replace BMPTs' turrets with tank turrets.
Very hard to say.
There are actually two different armata chassis... one with the engine at the front for vehicles that need rear hull access like the APC and IFV models with ramp rear doors, or the artillery vehicles as a front mounted engine would allow loading ammo directly into the rear hull.
Each different armata will have an electronics and sensor suite that will be standardised so for instance the electronics and sensors of an armata MBT will be the same or very similar to the electronics and sensors of the Kurganets MBT... though their might be differences in armament.
It really depends on the sensor and electronic layout... if they can build them in fully modular form for instance, the crew stations could be standardised and the different turrets could also be standardised so all the required electronics and sensors in the turret can be plugged in to a chassis in a plug and play type of way.
Of course with the two chassis there will be standard base engines with different power ratings... so an APC with a hull and rear troop compartment and a HMG in a remote weapon system would likely be the lightest vehicle... except possibly the command vehicle which will have lots of radios but nothing too heavy and these will be fitted with the least powerful models of the engine... say 1,400hp, while the 152mm Koalition with its enormous turret will likely be the heaviest member of the family at probably about 60-65 tons (the original twin barrel model might have been 65 tons so the new single barrel model might be 5 tons lighter) so it might have an uprated engine of perhaps 1,800 or even 2,000 hp.
Most of the weapons and sensors will be in the turrets, but the APC will have a tiny turret so I suspect most of its sensors and electronics will be in the hull.
What I am basically saying is that everything would have to be very modular to allow a swap and in most cases I don't think they would chop and change in action.
They might be able to convert otherwise unneeded vehicles like the Pantsir-S1 vehicle into a troop carrier (APC) if there is no air threat for example, but I don't know what level of repair yard you would have to send it to to make the conversion.
Indeed, looking forward to the other side's reply to these. One-shot disposable railgun, anyone?
Normally the best counter for a system is to look at its strengths and weaknesses and go for a weakness. Just off the top of my head how does it detect the threat? Radar or optics? Radar... jammers and chaff..., optics = laser dazzler... the longer they can keep the details of the system secret the more effective it will be.
Of course when developing such a system the first thing you ask yourself is can this be cheaply and easily defeated?
There is no point in spending millions only to find that a cheap jammer can render it useless.
They could have some spare combat modules for different roles already, in case if one or more turret housed combat module is way beyond damaged to be repaired.
Certainly from a logistics point of view it is ideal, and indeed for future upgrades it is good because the old modular armour can be taken off and new generation stuff bolted on for a new level of protection without having to re-manufacture all your vehicles. Keep in mind an old Tank Brigade might have had about 48 tanks in total but the number of other vehicles is probably 2-3 times that including all the engineering and air defence and artillery and of course the troop carriers, so upgrading the armour in a heavy tank brigade now means upgrading the modular armour on every single vehicle.
For example: IFV heavy armata brigade storms a city, after a few hours of fighting the enemy rushes to the countryside and are covered by heavy vehicles, instead of pushing through with a force that is relatively undergunned for the purpose, he transforms most of the IFVs into tanks and even heavy artillery.
No, that wouldn't really work. The brigade structure has tanks and IFVs... a tank brigade generally has 3 tank platoons with about 10 tanks per platoon, plus an infantry platoon with about 10 IFVs or APCs. A motor rifle brigade generally has about 3 platoons of IFVs and/or APCs with about 10 IFV/APCs in each platoon plus a platoon of tanks.
In a situation where the enemy has Zero armour or very little like in the 1980s in Afghanistan then it would make a lot of sense to swap out those MBTs for BMPTs, which have no troop carrying capacity, but have heavy firepower.
If the enemy is rapidly retreating I would deliver some SMERCH rockets on their heads with HE Frag bomblets, and another volley of Smerch rockets with anti armour submunitions on his covering armour.
Keep in mind that even an Armata IFV has the armour of a MBT even if it doesn't have the high velocity gun of one it will most likely be armed with a high velocity 45mm gun and probably Kornet-EM missiles, so fighting some third world countries tanks shouldn't be an issue. Of course calling in a few Havocs to clean up the retreating forces would likely be done too.
The real question is... what is the objective... to displace the enemy and recapture ground, or to kill as many enemy forces as possible... if the Georgian forces leave South Ossetia there is no need to chase them to Tiblisi... well not the first time anyway. If it happens again or it is Chechen separatists then the tactics would be more "active" to eliminate the enemy actors... cause if you don't get them now they will just be a pain in the... later.
I very much doubt they will be transformable in the field, and I don't think it would be very useful for them to be.
Armata brigades will have enormous firepower, and more likely on call in the form of airpower... both rotary and fixed wing, as well as any extra artillery they might want, and the new C4IR system will make it much more responsive and powerful and accurate.