A pair of T-90s fitted with the Shtora system; note the two "boxes" to each side of the main gun
|Type||Active protection system|
|Place of origin||Russia|
|Designer||NII Transmash in St.Petersburg in cooperation with Elers-Elektron in Moscow|
|Mass||350 kg (770 lb)|
Shtora-1 (Russian: , "curtain") is an electro-optical active protection system or suite for tanks, designed to disrupt the laser designator and laser rangefinders of incoming anti-tank guided missiles (ATGMs). The system is mounted on the Russian T-80 and T-90 series tanks and the Ukrainian T-84. The existence of Shtora was revealed in 1980 by Adolf Tolkachev.
Shtora-1 is an electro-optical jammer that disrupts semiautomatic command to line of sight (SACLOS) antitank guided missiles, laser rangefinders and target designators. Shtora-1 is a soft-kill, or passive-countermeasure system. The system was shown fitted to a Russian main battle tank during the International Defense Exposition, held in Abu Dhabi in 1995. The first known application of the system is the Russian T-90 main battle tank, which entered service in the Russian Army in 1993.[a] It is also available on the BMP-3M infantry fighting vehicle.
The Shtora-1 has four key components:
Shtora-1 has a field of view of 360 degrees horizontally and -5 to +25 degrees in elevation. It contains twelve aerosol screen launchers and weighs 400 kg. The screening aerosol takes less than three seconds to form and lasts about twenty seconds. The screen-laying range is from 50 to 70 meters.
According to Defense Update, the Shtora system can also locate the area within 3.5-5 degrees where the laser originated from and automatically slew the main gun to it, so that the tank crew can return fire and so that the stronger frontal turret armour is facing it.
Shtora-1 can operate in fully automatic or semi-automatic modes, continuously for six hours against anti-tank guided missile (ATGM) attack.