Damian
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T-80UD used by Pakistan forces uses more advanced FCS with thermal sight. Thermal sight used can be of different types (just like in case of T-90S).Yes, why do not you throw some light on the night vision devices on tank T- 80 UD ? You are an expert on that ...
This is what KMDB design bureau says.
Standard T-80UD used by Russian Army do not have thermal sight (it can be installed tough) and uses active IR night vision device.The T-80UD is fitted with an advanced fire control system, and either the gunner or commander can lay and fire the main armament at stationary and moving targets while the tank is stationary or moving with a high first round hit probability.
The fire control system comprises a gunner's 1G46 day sight, gunner's TO1-KO1E night vision system, commander's PNK-4S observation and sighting system, PZU-7 anti-aircraft sight, 1ETs29 anti-aircraft machine gun mount control system, 1V528-1 ballistic computer with input information sensors, 2E42 armament stabiliser and other devices.
The gunner's 1G46 day sight has a two-axis stabilised line of sight and incorporates a laser range-finder and a missile guidance capability.
In the standard version the gunner has a TO1-KO1E sighting system with TPN-4E image intensification sight, but as an option, the Buran-Catherine-E thermal imaging sight can be fitted.
The commander's PNK-4S observation and sighting system comprises a commander's TKN-4S combined day/night sight and a gun position sensor. The commander's TKN-4S combined sight is stabilised in the vertical plane and has three channels: a day unity vision channel, a day channel with magnification of x8 and a night channel with magnification of 5.4x. A simple switch enables the commander to change from the daylight channel to the night (image intensification) channel and back again.
The commander's anti-aircraft sight enables the commander to engage air targets by using the anti-aircraft machine gun from within the safety of the turret.
In order to calculate ballistic corrections, the 1V528-1 ballistic computer automatically takes into account all the inputs from the sensors including tank speed, angular target speed, gun trunnion axis cant, crosswind speed, target range, and course angle. Additionally, the following parameters are manually input: ambient air temperature, charge temperature, barrel wear ambient air pressure and so on. The computer also computes the time when the high-explosive fragmentation projectile with controlled detonation should be detonated over the target.
The fire control system has a so-called fire gating capability, i.e., after the gun firing button has been pushed, the gun will only fire when the misalignment between the line of sight and the gun bore axis is within pre-determined limits. The fire gate size is adjusted when calibrating the fire control system after installing it in the tank.
To enable a broad sector of terrain to be observed, the crew members are provided with unity magnification periscope vision blocks.
http://www.morozov.com.ua/eng/body/addburan.php
About Buran-Catherine-E thermal sight.
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