I am bringing out 2 mainstays of the Soviet Air defense umbrella that were designed to stay with the armored formations. We would study the Soviet Army and their Air Defense we had to look for were the SA-4/SA-6/SA-8 and the "ZSU", those were high on the priority list, for if we went to war, we wanted to know where those were since we would be using combined air basically Helicopters and A-10's to counter the huge formation of Soviet armor descending down the Fulda gap. These systems were designed to keep up with the Soviet formations in the field to protect them from our Air power, the Soviets had multiple systems that would overlap each other and provide complete coverage from low level attacks to the high atmosphere. I am continuing my "Red Storm Rising" theme, in the book, the SAM systems were a major threat to the A-10's and the "Frisbee's" stealth fighters that were trying to slow and stem the Soviet advance. In the book, the Soviet General had commented "We have done well with our technology, we can kill men instantly with missiles."

The
ZSU-23-4 "Shilka" is a lightly armored Soviet
self-propelled,
radar guided
anti-aircraft weapon system (
SPAAG)
The acronym "ZSU" stands for
Zenitnaya Samokhodnaya Ustanovka (
Russian:
Зенитная Самоходная Установка),
meaning "anti-aircraft self-propelled system"; the "23" signifies the
bore diameter in millimeters; the "4" signifies the number of gun
barrels. It is named after the
Shilka River in Russia. Afghan soldiers nicknamed it the "
sewing machine" due to the sound of firing guns. It is also referred to by its nickname of "Zeus" which is a play on the first part of the name.
T72M and a ZSU-23-4
The development of the ZSU-23-4 "Shilka" began in 1957 along with ZSU-37-2 "Yenisei"
and the vehicle was brought into service in 1965, replacing all
ZSU-57-2s in air defense units toward the beginning of the 1970s. The
ZSU-23-4 was intended for AA defense of military facilities, troops, and
mechanized columns on the march; originally, the more powerful guns of
"Yenisei" were judged to be effective at covering the inner dead-zone of
Soviet
surface-to-air missile
systems despite the increased weight of the vehicle, but commonality
prevailed. Initially, tank regiments should have had the anti-aircraft
artillery battalion of "Shilka" (consisting of two batteries, four
ZSU-23-4s in each). At the end of the 1960s, one battery was equipped
with ZSU-23-4s and the other with ZSU-57-2s. Motorized rifle and tank
regiment standard anti-aircraft batteries consisted of two platoons
later (one platoon was equipped with four ZSU-23-4s and another with
four mobile
surface-to-air missile systems
9K31 Strela-1 or
9K35 Strela-10).
The ZSU-23-4 combined a proven radar system, the non-amphibious chassis
based on GM-575 tracked vehicle, and four 23 mm autocannons. This
delivered a highly effective combination of mobility with heavy
firepower and considerable accuracy. The ZSU-23-4 outclassed all
NATO
anti-aircraft guns at the time, and it is still regarded as posing a
major threat for low-flying fixed-wing aircraft and helicopters.
The system was widely fielded throughout the
Warsaw Pact
and among other pro-Soviet states. Around 2,500 ZSU-23-4s, of the total
6,500 produced, were exported to 23 countries. The Soviet Union's
successor states continue to manufacture and supply variants of the
ZSU-23-4, notably the
Ukrainian "Donets" and Polish "Biala" variants.
ZSU-23-4 graphic.
ZSU-23-4 at Yad la-Shiryon Museum, Israel.
ZSU-23-4 units saw active service in the
Yom Kippur War (1973) and other Arab-Israeli conflicts, the
Iran–Iraq War (1980–1988), and the
First Gulf War (1990). During the 1973
Yom Kippur War, the system was particularly effective against the
Israeli Air Force. Israeli pilots attempting to fly low in order to avoid
SA-6 missiles were often shot down by ZSU-23-4s as in
Operation Doogman 5. During the
Soviet-Afghan War ZSU-23-4 units were used widely and to great effect against
mujahideen positions in the mountains, the ZSU-23-4's guns being able to elevate much higher than the weapons on
BMPs,
BTRs,
T-55s, or
T-62s. They were also used to suppress defensive positions around the presidential palace during the initial
coup in Kabul at the start of the Soviet-Afghan war. The Russian Army used the ZSU-23-4 for mountain combat in
Chechnya.
Initially fielded by the loyalist forces of the Syrian Arab Army as a
fire support vehicle, a number of them were captured by different
factions in the
Syrian Civil War
and they are normally fielded in a fire support role by all sides.
There were no or at most very limited, attempts by the different
opposing forces to use the Shilka in its original anti aircraft role
against loyalist and international air forces operating in the area.
The radar-guided ZSU-23-4 "Shilka" SPAAG, with its four 23 mm (0.90")
autocannons,
was a revolutionary SPAAG, proving to be an extremely effective weapon
against enemy attack aircraft and helicopters under every weather and
light condition. The ZSU-23-4 has a very high density, rate and accuracy
of fire, as well as the capability for each of the four autocannons to
fire its own type of projectile from separate belts. While it is
technically possible that each cannon shoots different type of
ammunition, there were two types commonly used in late 1970s: OFZT
incendiary fragmentation and BZT armour-piercing tracer, which were to
be loaded in 3:1 ratio—three OFZT, then one BZT, every 10th BZT round
equipped with so-called "copper remover" and marked. Operators were
strongly discouraged from shooting from a single barrel.

The appearance of the "Shilka" caused significant changes in NATO
tactics in aircraft use at low altitude over the battlefield. Despite
its present obsolescence as a modern short-range anti-aircraft weapon,
the ZSU-23-4 is still deadly for enemy light armoured vehicles, infantry
and firing points as an infantry-support vehicle. With its high rate of
accurate fire, the ZSU-23-4 can even neutralize tanks by destroying
their gun sights, radio antennas, or other vulnerable parts. ZSU-23-4s, especially late models, have excellent performance and good systems reliability.
Based on the
GM-575 tracked vehicle chassis, which used components from the
PT-76
light amphibious tank, the ZSU-23-4 mounts an armored turret holding
four liquid-cooled 23 mm (0.9") 2A7 autocannons linked to an RPK-2
"Tobol" radar (NATO designator: "Gun Dish"). The vehicle weighs 19
tonnes (late modifications up to 21 tonnes), has a movement range of
450 km (280 mi) and a top speed of 50 km/h (31 mph). Additional
firepower of late modifications can be supplied by a roof-mounted pod of
six short-range
SA-18 SAMs, or side mounted
SA-16s.
The crew numbers four: driver, commander, gunner and radar operator.
The driver's compartment is located in the nose part of the vehicle. The
fighting compartment is in the center, and the engine compartment is in
the rear part of the vehicle.
Each water-cooled 23 mm 2A7 autocannon has a cyclic rate of 850–1,000
rounds per minute for a combined rate of fire of 3,400–4,000 rounds per
minute. The welded turret has a race ring transplanted from a
T-54
medium tank with a 1,840 mm (6') diameter. The 360° rotating turret is
fully stabilised and capable of firing on the move. The turret rotation
and autocannon elevation mechanisms provide very good speed and guidance
accuracy. The hydraulically driven aiming mechanisms have been proven
to be very reliable. Manual aim is used against ground targets. The quad
automatic anti-aircraft gun AZP-23 "Amur" has a range of elevation from
-4° to +85°. The
GRAU
designation for ZSU-23-4 turret with 23 mm (0.9") AZP-23 "Amur" quad
automatic gun is 2A10. An armoured plate inside the turret protects crew
members from fire and explosive gas during intense firing.
Ammunition capacity is 2,000 rounds stowed aboard (520 rounds per each
upper autocannon and 480 rounds per each lower autocannon) loaded in
50-round or shorter belts. A typical loading of each ammunition belt contains 40 OFZT and 10 BZT rounds.
They can be fired to a maximum horizontal range of 7 km (4.3 mi), and a
vertical range of 5.1 km (3.2 mi). The effective vertical range is
1.5 km (0.93 mi) at a direct range to target of 2.5 km (1.6 mi) and
target speed of 250 m/s (up to 500 m/s if a modern fire control system
is used). The usual autocannon burst consists of 3–10 projectiles and
target lead angle is calculated for each burst (fire without adjustment)
by computer.
In attacking targets on the ground, its effective range is around
2.5 km (1.6 mi). The short range of its 23 mm autocannons and relatively
low explosive effect of its small-calibre projectiles mean it is less
able to engage threats such as jet attack aircraft and cruise missiles
than modern systems like the
9K22 Tunguska
armed with more powerful 30 mm autocannons and integrated missile
armaments. A special 23 mm round with composite projectiles was
developed for a modern variant of SPAAG (ZSU-23-4M4) to be used against
cruise missiles.
The RPK-2 "Tobol" a.k.a. 1RL33 radar operates in the
J band
and can detect aircraft up to 20 km (12 mi) away. It has excellent
target tracking capability and is relatively hard to detect by the
enemy. However, the radar picks up many false returns (
ground clutter)
under 60 m (200 ft) of altitude. The radar antenna is mounted on
collapsible supports in the top rear of the turret. There is an optical
alignment sight. The RPK-2 radar proved to have good protection against
enemy passive electronic radar counter-measures. Nevertheless, the radar
system of the ZSU-23-4 has a short detection range during target
search, depending on weather conditions (mainly dependent on rain and
snow conditions). It is hard to automatically track the target at ranges
less than 7–8 km (4.3-5.0 mi) because of the high angular speed of the
target at close distances. The radar needs to be reset quite often
because of the unstable parameters of electronic
cathode-ray tubes of the target selection system. The absence of an automatic laser range finder requires a skillful commander and gunner.
Soviet doctrine supplied the vehicle since 1965 in an anti-aircraft
artillery battery of two, four-vehicle platoons for anti-aircraft
defence of motor rifle and tank regiments. At the end of the 1960s one
platoon was equipped with ZSU-23-4 SPAAGs while another one was still
equipped with
ZSU-57-2
SPAAGs. ZSU-57-2 was completely replaced with ZSU-23-4 by the beginning
of the 1970s. In the 1970s, Soviet motor rifle and tank regiments were
equipped with an anti-aircraft missile artillery battery consisting of
two platoons, one equipped with four ZSU-23-4 SPAAGs and the other with
four
9K31 Strela-1 (SA-9 Gaskin) or later with four
9K35 Strela-10 (SA-13 Gopher) short-range
surface-to-air missile systems which cover the dead zones of
2K12 Kub
(SA-6 Gainful) surface-to-air missile systems belonging to the
divisional level. Since the 1980s Soviet motor rifle and tank regiments
were equipped with an anti-aircraft artillery battalion of three
batteries (one was equipped with ZSU-23-4 or
9K22 Tunguska SPAAGs, the second one was equipped with
9K35 Strela-10 (SA-13 Gopher) short-range surface-to-air missile systems and the third battery with
9K38 Igla man-portable surface-to-air missiles on IFVs or APCs.
The ZSU-23-4 is very vulnerable to enemy anti-tank missiles, cannons
and heavy machine guns; the armor is thin (not exceeding 15 mm) and the
exposed wheels, tracks, radar, and gun barrels can easily be damaged in
combat. Firing positions of ZSU-23-4 SPAAGs are typically placed near
the forward edge of the battle area (
FEBA)
but behind the main forces, usually 600–1000 m behind objectives when
on the defensive or 400–600 m behind the leading tanks on the offensive.
ZSU-23-4 SPAAGs are divided evenly along the troop columns on the
march.
At first each ZSU-23-4 operated in combat autonomously, without
target marking from regimental or divisional air defense. In 1978, the
PPRU-1 (mobile reconnaissance and control post) was passed into service
of the Soviet Army. The PPRU-1 ("Ovod-M-SV") vehicle is based on
MT-LBu armored tracked chassis and it was intended for control of motor rifle
or tank regimental anti-aircraft unit equipped with ZSU-23-4 SPAAGs and
9K31 "Strela-1M"
mobile surface-to-air missile systems. The PPRU-1 is equipped with
"Luk-23" radar and an automatic fire control system associated with the
divisional air defense system.
ZSU-23-4 photo.
The guns are useful against low-flying aircraft and lightly protected
ground targets. Due to its effectiveness against ground targets,
ZSU-23-4s have been used in urban environments (e.g.,
Afghanistan,
Abkhazia,
Chechnya,
Syria and
Lebanon).
This is primarily because the guns can elevate much higher than a tank
or APC cannon, enabling armored units equipped with ZSU-23-4s to return
fire against ambushes from above.
A small number of ZSU-23-4 SPAAGs are still in use by the Russian
Naval Infantry (specifically the 61st and 175th brigades of the
Northern Fleet and the 336th brigade of the
Baltic Fleet).
You noticed that both systems share the same chassis...
The
2K12 "Kub" (
Russian:
2К12 "Куб"; English:
cube) (
NATO reporting name:
SA-6 "Gainful") mobile
surface-to-air missile system is a
Soviet low to medium-level air defence system designed to protect ground forces from air attack. "2К12" is the
GRAU designation of the system.
Each 2K12 battery consists of a number of similar tracked vehicles, one of which carries the
1S91 (SURN vehicle, NATO designation
"Straight Flush") 25 kW
G/
H band radar (with a range of 75 km (47 mi)) equipped with a
continuous wave illuminator, in addition to an optical sight. The battery usually also includes four triple-missile
transporter erector launchers (TELs), and four trucks, each carrying three spare missiles and a crane. The TEL is based on a
GM-578 chassis, while the 1S91 radar vehicle is based on a GM-568 chassis, all developed and produced by
MMZ.
The development of the 2K12 was started after 18 July 1958 at the request of the CPSU Central Committee.
The system was set the requirements of being able to engage aerial
targets flying at speeds of 420 to 600 m/s (820–1,170 kn) at altitudes
of 100 to 7,000 m (330 to 22,970 ft) at ranges up to 20 km (12 mi), with
a single shot
kill probability of at least 0.7.
The systems design was the responsibility of the now
Tikhomirov Scientific Research Institute of Instrument Design
(NIIP). In addition to NIIP several other design bureaus were involved
in the creation of the Kub missile system including the now JSC
Metrowagonmash
(former MMZ)which designed and produced the chassis of the
self-propelled components. Many of the design bureaus would later go on
to co-operate in the development of the successor to the 2K12 "Kub", the
9K37 "Buk"
First trials of the missile system were started at the end of 1959 to discover a series of problems:
- low power for the missile radar seeker and badly designed nose cone,
- missile air inlets design failure,
- low quality of heat shield inside the afterburner chamber (titanium was replaced by steel).
Those failures resulted in some 'orgchanges': In August 1961 Toropov
was replaced by Lyapin as the Chief Designer of Vympel and in January
1962
Tikhomirov
was replaced by Figurovskiy as the Chief Designer of NIIP. Still, the
work wasn't intensified. Before 1963 only 11 of 83 missiles fired had
the seeker head installed, only 3 launches were successful.
Kub downed its first ever air target on February 18, 1963, during the state trials at
Donguz test site,
Orenburg Oblast. It was an
Ilyushin Il-28 bomber.
The system entered an extended testing period between 1959 and 1966,
after overcoming the technical difficulties of producing the 2K12 "Kub"
the system was accepted into service on 23 January 1967 and went into
production that same year.
It is sometimes claimed that the
SA-N-3 Goblet
naval system is a version of the 3M9 but this is not the case, as the
M-11 Shtorm is a separate system and, unusually for Russian
surface-to-air missiles, has no land-based variant.
The 2K12 system shares many components with the
2K11 Krug
(SA-4) system. In many ways they are designed to complement each other;
2K11 is effective at long ranges and high altitudes, 2K12 at medium
ranges and intermediate altitudes.
The system is able to acquire and begin tracking targets using the
1S91 "Самоходная установка разведки и наведения" (SPRGU -
"Self-propelled Reconnaissance and Guidance Unit" / NATO: "Straight
Flush" radar) at 75 km (47 mi) and begin illumination and guidance at
28 km (17 mi).
IFF
is also performed using this radar. It can only guide one or two
missiles to a single target at any time. The missile is initially
command guided with terminal
semi-active radar homing (SARH), with target illumination provided by the "Straight Flush" radar. Detonation is via either the impact or
proximity fuze.
On the latest models, this vehicle is also fitted with an optical
tracking system which allows engagement without the use of the radar
(for active RF emissions stealth reasons, or due to heavy
ECM jamming)
in which case the effective altitude is limited to 14 km/46000 ft. The
optical tracking method also allows engagements to altitudes below that
where the radar is able to track targets. Maximum target speed is around
Mach 2 for head-on engagements and Mach 1 for tail-chase engagements. Top speed of the missile is approximately Mach 2.8.
In contrast to the elaborate
Patriot missile
or even the simpler Hawk system fielded by US forces, most of the
system rides on two tracked self-propelled vehicles, rather than towed
or mounted on trucks, and either the launcher or control vehicle can be
set to launch in only 15 minutes after changing location.
The fairly large missiles have an effective range of 4–24 km (2.5–15
miles) and an effective altitude of 50–14,000 m (164–45,931 ft). The
missile weighs 599 kg (1,321 lb) and the warhead weighs 56 kg (123 lb).
Top missile speed is approx.
Mach 2.8. The combined propulsion system 9D16K included
solid fuel rocket motor which, when burned out, forms the combustion chamber for a
ramjet in a pioneering design putting this missile far ahead of its contemporaries in terms of propulsion.
The missile was fitted with a semi-active radar seeker 1SB4, designed by
MNII Agat, which was able to track the target by
Doppler
frequency since the start. Later upgrades (3M9M3 missile) could do this
before the start. Chief Designer of the seeker head was Yu.N. Vekhov,
since 1960 – I.G. Akopyan.
In 1977 a new version, the
3M9M1 (DoD designation
SA-6B)
was created with three missiles fitted onto a different chassis (the
same as that of the 9K37 "Buk" (NATO reporting name "Gadfly" / DoD
SA-11 ), the 2K12 effective replacement) with an integrated
"Fire Dome" missile guidance radar. For comparisons between the 2K12, 9K37, see the
9K37 Buk entry.
An earlier incremental upgrade saw the 2K12 missiles replaced with the 2K12E versions and this system was known as
Kvadrat ("Квадрат", meaning
square).
This name was derived from the most common arrangement pattern of the
military vehicles of the 2K12 complex, when the 1S91 radar is located at
the center and 4x2P25 TELs at the
vertices of a square around the radar.
SURN
1S91 vehicle included two radar station – a target
acquisition and distribution radar 1S11 and a continuous wave
illuminator 1S31, in addition to an
IFF interrogator and an optical channel.
While 1S31 antenna was installed on the upper section of the
superstructure and the 1S11 on the lower, they could turn around
independently. To make the height of the vehicle lower the central
cylinder was able to hide inside the prime mover.
The acquisition range of the radar was reported as 50 km (31 mi) for the
Phantom II type target.
Total weight of the 1S91 vehicle with a crew of 4 was 20.3
tonnes and 2P25 vehicle with 3 missiles and a crew of 3 was 19.5 t.
"Spoonrest, and a "Thin Skin" with a "Fansong SA-2" system in the background.
The 2K12 can also be used at a regimental level, if used as such it
can be accompanied by a number of additional radar systems for extended
air search at longer range and lower altitude, to supplement the 1S91
"Straight Flush". These systems include the:
- P-40 "Long Track", an E band early warning radar (also used by the SA-4 and SA-8), with a 370 kilometres (230 mi) range.
- P-15 "Flat Face A", a UHF early warning radar (also used by the SA-3, with a 150 kilometres (93 mi) range.
- "Thin Skin" or "Side Net" E band height finding radar (also used by the SA-2, SA-4 and SA-5, range 240 km/148 miles)
- "Score Board" IFF radar
The
"Spoon Rest" and
"Thin Skin" are mounted on a truck,
"Long Track" on a tracked vehicle (a modified
AT-T) and
"Flat Face" on a van. It is unknown what kind of mounting the
"Score Board" has.
Without the P-40 "Long Track" mobile radar vehicle, the 2K12 is unable to track aircraft at high altitudes.