2). Why they are masked and entrenched?
3). Look at the dates on photos. Why there are no snow and green vegetation ebverywhere?
I'm not a big fan of Airforce and aviation in general, but maybe someone here will find this interesting.
It's a zip archive of a Excel file which has all info about the Airforce reform - how many planes and what kind of every regiment have, how many will they have in 2010 etc.
So what is the latest variant of the T-90 then? T-90A, T-90S??? Just curious what kind of upgrades have happened to the T-90 as it by far my most favorite tank.
AFAIK the latest is the T-90A (originally called T-90M) with a welded turret and Catherine-FC thermal sights.
Main external difference is the welded turret which is protected by Relikt armour.
It has the ESSA Sight (Catherine TI camera is part of it) mated with Laser Range Finder, Wind Sensor + 1G46 day sight. Auto Tracking capability, new navigation system and some other stuff.
Another pretty interesting addition is the "Ainet" fuse setting system which allows the tank to detonate HE-FRAG rounds at predetermined moment of flight
Quite right, though it was designed with the VDV in mind based on the BMD-3 chassis for the purpose of anti tank use. The Naval forces have used tanks in that role rather than the PT-76 specifically, I have no information which vehicles the Sprut will replace. They might replace the T series tanks used by the naval infantry while the PT-76 might get an upgrade with an S-60 57mm main gun replacing the 76.2mm main gun. Or they might replace the PT-76 and put the new S-60 gun on some of the SPRUT vehicles. Having a gun that can fire at up to 120 rpm a shell as powerful as the 57mm round or any new 57mm rounds that might be developed would make a very powerful anti APC vehicle able to smash any non tank based APC from most combat ranges with a very high engagement rate. Together with SPRUTs that would be an impressive force.The Sprut-SD is not exclusively for the VDV (airborne forces).
There is one photo of this vehicle during an amphibious landing from a ROPUCHA class landing ship. That indicates that it may equip the black berets (Russian marines) units. In that case, it will be indeed a PT-76 replacement.
I wonder if the design of the modified PT-76s allow dual feed so an anti personel round together with an anti armour round could be available for immediate use all the time like with the dual feed 30mm guns of the Russian IFVs.