The defect is the steel not being tempered to high enough tolerance, therefor it is a defective barrel. It is a defect of manufacturing process. Of course it is not a defect of design, T-72s fire rounds the world over without exploding ammo.
T-72 is the most defects known is a circular turntable autoloader shells are stored in the turret underneath, when the inside of the ammunition is ignited detonated often cause turret was blown away from the body. But T-72 is designed with T-64 and T-80 was relatively safe, this is because the separated shell its horizontal storage way in the rotary table, in addition to the above elevator position outside are covered with a layer of armor plate, the vast majority of the shells were not exposed to combat indoor. At the same time these shells in the vehicle position close to the road wheel height, so in addition to the body side armor also extra wheel protection; instead of T-64/80 propellant vertical storage way around in the turret pod, not only exposed to combat indoor and its position above the wheels, very easily from the body side or from the angle of fire lit throughout the turret. Even so, T-72 has many additional ammunition stored in the inner wall of the shell rack, turret turret pod base and the fighting between the chamber and the engine shell frame, the lack of additional protective shells easily through high temperature separation of fragments in the turret or metal jet ignited, causing explosion and fire severity. In the Gulf War of T-72 was destroyed and detonated, though some call Iraq have is pretty early export degraded version "monkey" type T-72M or T-72M1, but the fact that the Russian T-72B items cannot be of battle, such as the face of APFSDS protection, T-72M, T-72B and M1A1HA values for 380MM 530MM and 680MM, respectively, with the penetration of APFSDS, 3BM-15 only 340MM, the Russian force 3BM-32 and 3BM-42 is 500MM, American M829A1 610 to 660MM. An important symbol of a thermal imaging device or the third generation of the chariot, the United States began in 1979 of M60A3, while Russia until 1993 in T-80UK first used the "agave", but also in exports to India T-90, the device by the Indian side refused, for the French "Catherine".
Another drawback to T-72 is due to the lack of precision of fire control system, makes the shooting procedure not only lengthy, inefficient, and hit rate than T-64 and T-80 lower. Sighting instrument TPD-K1 and its improved 1A40 most T-72 equipped with both built-in laser rangefinder, but they can only perform trajectory correction of simple calculation, but only 1A40 can lead to mobile target calculation. The sight in the distance must be laser point in the target on the implementation of distance, and the location of point position and aiming at different characterizations of center, and then aim at the characterization based on trajectory correction moved to a new location in the range is completed, then the shooter must will aim at the characterization of heart in the target. When using TPD-K1, if encounter moving target shooter must decide the leading, aiming at characterization has a long row of scale is used to aim at a moving target. 1A40 in the original sight next to add another sight, its function is to lead amount calculated display. The shooter must continue to tracking the target for 2 seconds, then the sight will display a quantity needed, Archer aiming at scale most close to that figure out. After the scale is arranged between the target fulfillment lead extraction. The T-72 has a feature called Delta-D, it will be based on the movement of the body after modification of target distance measurement. This function is not reliable, especially in the export of T-72 often cause error correction, and in particular the terrain such as wet ground or hilly terrain will make error correction.
In addition to the defects and other defects, T-72. T-72 lack of spare optical sight, 1 times the periscope can only use the striker at the top of the number. Automatic loader is driven by electric power, but a power system failure to carry out artificial loading can only be a mechanical device, each filling takes 1 minutes. The T-72 is equipped with active infrared night vision sight, the effective range of only 800 meters, and the resolution as well as the thermal imager. Automatic loading machine can not after each shot, automatically and continuously filled with a shell, must wait until the striker to press the switch to start filling procedures. T-72 defects after the collapse of the Soviet Union continued to be Russia and other countries use improvement, including the introduction of new fire control system and improved thermal imager, autoloader, design or substantially modified turret armor configuration configuration, and automatic loading machine.
Source:-
T-72 main battle tanks _ T-72 main battle tanks wiki _ hewiki.com
