[sci.military] Soviet T-72 Main Battle Tank

curt@uunet.UU.NET (Curt Fennell) (08/31/90)

From: fmrco!curt@uunet.UU.NET (Curt Fennell)

With all of the discussion about the relative quality of the ground forces
facing each other in Iraq/Saudi Arabia, I looked up the T-72 in my references
at home and came up with the following information:

GENERAL;
The T-72 tank was another in the long series of tanks that began before
WWII and began to approach it's present form with the emergence of the T-55.
The T-72 was a major departure from it's predecessor, the T-62 (I include
the T-64 as a subset of the T-72) in that it contained a different engine,
a new suspension and a larger gun. However, it continued the basic design
philosophy of short, relatively light (when compared to western designs)
tanks that are built in large quantities.

ARMAMENT:
The tank has a 125mm, auto-loaded smooth-bore gun that relies
on a fin-stabilized projectile to achieve accuracy.  The auto-loading system
has been commented on before: every reference I read said that initially,
the autoloading system did tend to load various body parts of the gunner.
In "The Threat", by Andrew Cockburn, it is mentioned that as late as 1982, 
Soviet forces were told to load the gun by hand to avoid this problem.
Presumably, that problem has been fixed by now, but the Iraqi tanks
are probably not the latest versions.

Tactically, the autoloader requires the gun to be elevated/depressed to a
certain position so that the rounds can be loaded. This means that the gunner
has to reacquire the target after every shot, which partially negates any
speed advantage obtained by autoloading.

The gun's anti-tank ammunition is of the Fin-stabilized discarding sabot type
and is made of low grade iron.  It shoots at very high muzzle velocities 
(> 1600 meters/second) and has a very flat trajectory, making it very
accurate at shorter ranges.  At longer ranges (over 2000 meters), the 
round is not very accurate.  The round can defeat all older tanks at all
ranges - but might have trouble penetrating the most advanced armor on
the M-1 at longer ranges.

Older versions have Stereo Coincidence range finders, while newer models
may have laser ranging.

ARMOR:
The tank hull is made of rolled homogeneous steel and modern versions have 
add-on reactive armor plates. During the tank battles in the Beka Valley in
1982, Israeli tanks destroyed a number of T-72's with the old reliable 105mm 
main gun.  During one engagement, all of the T-72's that were hit (9) were 
seen to explode, killing all the crewmembers. This hints at the old soviet
design of storing the ammo and fuel close together in exposed locations
within the turret.

AUTOMOTIVE
The T-72 has a new replacement for the old Christie suspension, probably 
a torsion bar arrangement. The engine is an upgraded version of the 
Diesel used in the old T-34/85.  Various assessments of the automotive
reliability range from ok to terrible. The soviet defector Suverov (sp?)
stated that tank troops in Eastern Europe initially loved the new tanks,
but that the engines wore out at an alarming rate and that they were
not a significant improvement over the T-62. 

It looks as if the T-72 is roughly equivalent to the M60, but should prove
no match for the M-1