| Characteristics |
Serial tank T-72
(FCS 1A40 ) |
Upgraded tank T-72
(FCS 1A42) |
| Day sighting system |
ÂPD-º1 |
1G46 |
|
Target detection range (m) |
4000 |
5000 |
|
Stabilization of the field of view |
1-axis
stabilization
(in vertical plane) |
2-axis stabilization |
|
Missile guidance laser channel (m) |
No |
yes (firing range of up to 5000 m) |
| Laser rangefinder |
Probability of trustworthy measurement of range (PTM) to a TANK-type target at distances: |
500... 2500 m |
0.9 |
0.9 |
|
2500... 3000 m |
0.7 |
0.9 |
|
3000... 4000 m |
0.5 |
0.9 |
|
PTM if there are screening objects |
0 |
0.9 |
|
PTM if targets are small-size |
0 |
0.8 |
|
Systematic error of range-finding (m) |
25 |
10 |
|
Magnification |
x8 |
x2.4...x12 |
|
Error of stabilization of the line of sight (mrad) |
< 0.5 |
< 0.2 |
|
Error of angle transmission from the gun to the sight (angular minutes) |
5 |
2 |
|
Speed of drift of the stabilized line of sight (mrad/min) |
<16 |
< 12 |
|
Built-in test equipment (BITE) |
No |
Yes, semi-automatic |
|
Missile guidance system |
No |
Yes |
|
Method of guidance |
- |
laser beam riding |
|
Hit probability at a distance of 5000 m |
- |
0.8
(0,9 at a distance of 4000 m) |
|
Night sight |
TPN-1 |
TPN-4E |
|
Viewing distance under conditions of natural illumination at night equal to
(3...5)x10- 3 lx (m) |
600 |
1200... 1400 |
|
Mode of operation |
Active |
Passive |
|
Magnification |
x5.5 |
x6.8 |
|
Field of view (degrees) |
6.0 |
5.4 |
|
Method of guidance of the line of sight |
mechanical linkage with the main gun |
Electric drive following the stabilized line of sight of the 1G46 gunner's main sight |
| Armament stabilizer |
|
Main gun drive |
Electrohydraulic |
electrohydraulic (improved) |
|
Stabilization accuracy in vertical plane (mrad) |
0.8 |
0.4 |
|
Possibility of firing on the move |
No |
Yes |
|
Turret drive |
Electrohydraulic |
Electromechanical |
|
Stabilization accuracy in horizontal plane (mrad) |
1.2 |
0.6 |
|
Ballistic computer |
|
Input of the angle of sight |
Semi-automatic |
Automatic |
|
Input of the lateral lead angle |
Manual |
Automatic |
|
Taking into account the parallax for the gun and machine gun |
No |
Automatic |
|
Culculation of angles of sight and lead angles for the coaxial machine gun |
No |
Automatic, with allowance for cross wind |
|
Fire-gating |
it is provided with the help of mechanical contacts |
it is provided by the computer with possibility of adjusting it |
| Allowance for the deviation of the current
conditions of firing from normal |
No |
the following factors are taken in account: cross wind, cant, angular and linear velosities of target, target position angle, air temperature, air pressure, charge temperature, gun bore wear |
| Allowance for individual angles of jump |
No |
Yes |
| Target hit probability when firing at a TANK-type
target at a distance of 2000 m |
0.2... 0.5 |
0.55... 0.8 |
| Accuracy of the target indication system (mrad) |
40 |
2... 4 |
| Fire control override system |
No |
yes; the commander is provided with capability of firing the main gun and coaxial machine gun on the move in the day-time and at night, even if the gunner's main sight is faulty |
| Automated hydropneumatic cleaning of glasses of
the sights and observation devices |
only possibility of cleaning the main sight is envisaged, the proportioning being performed manually |
possibility of cleaning all the sights (including those of the commander) is
envisaged, proportioning being performed automatically by means of a timer
(0.2 s) |
