Rotem K2 Black Panther Main Battle Tank, South Korea



Hyundai Rotem, an affiliate of the Hyundai Motor Group, is developing the K2 Black Panther (Hangul: K2 '흑표'; Hanja: K2 '黒豹') that will replace most of the M48 Patton tanks and complement the K1 series of main battle tanks currently fielded by the Republic of Korea Army (ROKA).
The MBT is intended to provide improved performance in the 21st century network battle environment by employing improved ergonomics and digitalisation.

Rotem introduced the vehicle along with its wheeled armoured vehicles and unmanned weapon systems at the Seoul Aerospace and Defence Exhibition (ADEX) at the Seoul Airport in Seongnam City, Kyeonggi Province, in October 2009. The tank is expected to enter into service in 2014. The Turkish-made main battle tank Altay uses the technology systems developed for the South Korean K2 MBT by Hyundai Rotem. Altay will have the stronger chassis characteristics of the K2 Black Panther MBT. It will have a re-designed Turkish turret and heavier armour than the K2. In late September 2013, South Korea entered the K2 Black Panther in the Peruvian Army's future tank competition.



The K2 Black Panther development
In 1995, the South Korean Agency for Defense Development (Hangul: 국방과학연구소) was given the task of developing a modern armored fighting vehicle based upon Korean state-of-the-art domestic technologies. It was intended for this development program to further modernize the Republic of Korea Army; despite the superior capability of existing K1 and K1A1 designs versus existing North Korean tanks; most of which are aging T-55s and Type 59s. Emphasis upon indigenous technologies would also allow the proposed vehicle to enter the export market without licensing issues.

Early design variants included a version with an unmanned turret, which was later scrapped in favor of manned turret designs. It was also planned for the vehicle to be equipped with Rheinmetall's experimental 140 mm smoothbore gun, though this had to be abandoned when Rheinmetall ceased development upon the rationale that its current weapon, the 120 mm/L55 would be more than adequate to counter prospective armored threats for the foreseeable future. The K2 was subsequently reconfigured for the 120 mm/L55, though it is capable of mounting the 140 mm gun with minimum modifications should the need arise.

The K2 MBT design was completed in 2006. Rotem signed a co-operation agreement in March 2011 with the subcontractors of K2 MBT and provided KRW12.8bn ($12m) to solve the financial difficulties caused by delays in the mass production of the vehicles.

Rotem signed a contract with the subcontractors in November 2011 to offer emergency operating funds totalling KRW3bn ($2.65m). The mass production of K2 MBTs was further delayed due to technical defects in engines and transmission.

On 26 September 2014, the K2 was demonstrated to 40 foreign military visitors from 9 countries at DX Korea 2014. When compared to the K1A1 tank, the K2's main gun reloaded quicker and reached targets faster. Although both are 120 mm, the K2's barrel is 1.3 m (4.3 ft) longer (6.6 m (22 ft) total length), resulting in a higher muzzle velocity of 1,400 m/s (4,600 ft/s) (compared to 1,140 m/s (3,700 ft/s) for the K1A1) for higher accuracy and armor penetration. Other features demonstrated included the tank's ability to cross a 4 m (13 ft)-deep river, a posture control function that can lower its height by 40 cm (16 in), and a laser warning systems that turned the turret towards the source almost instantaneously. Personnel from Hungary and others expressed interest in the K2 after the event.

In July 2008, Rotem signed a technology cooperation deal with Otokar to provide technology systems of the K2 MBT for the development of Turkey's Altay Main Battle Tank. The first prototype of the Altay MBT is expected to be ready by 2015.

Armament of the K2 Black Panther
The main armament of the K2 Black Panther consists of a German-made Rheinmetall 120-mm/ L55 smoothbore gun produced under license in South Korea. The gun is fitted with an automatic loader which ensures the loading of projectiles on the move even when the vehicle moves on uneven surfaces. The 120mm gun can fire about 10 rounds per minute. With a total supply of 40 various rounds, the Black Panther can rain hellfire on an enemy position for nearly three minutes before needing a resupply. A total of 16 rounds are stored in the autoloader and 24 rounds are stored inside the hull. 

The K2 can fire a wide range of munitions using its main gun including, but not limited to, an indigenously developed and improved tungsten APFSDS kinetic energy penetrators, which offer significantly better penetration than the previous generation tungsten rounds through better heat treatment of the tungsten alloy and the deformation-free self-sharpening that the penetrator undergoes as it penetrates the armour of its target, and multi-purpose HEAT chemical energy rounds similar to the American M830A1 HEAT MP-T that can be used against personnel, unarmored and lightly armored vehicles on the ground as well as low-flying helicopters. 

The Korean Smart Top-Attack Munition (KSTAM) is a fire-and-forget, top-attack anti-tank munition with an effective operating range of 2–8 km, developed specifically for use with the K2. It is launched as a kinetic energy projectile, fired from the main gun in a high trajectory profile comparable to that of a mortar. Upon reaching its designated target area, a parachute deploys, giving on-board millimeter band radar, Infrared and radiometer sensors time to seek and acquire stationary or moving targets. When a target is acquired, an explosively formed penetrator is fired from a top-down position, to exploit the weaker top armor of tanks. Target acquisition can also be directed manually by the tank crew via a remote link. These characteristics allow the launch vehicle to remain concealed behind cover while firing successive rounds towards the known location of an enemy, or provide effective indirect fire support against targets hidden behind obstacles and structures.

A 7.62 mm coaxial machine gun is mounted to the left side of the main armament. A 12.7 mm K-6 heavy machine gun is mounted on the top right of the turret. Visual and Infrared Screening Smoke (VIRSS) grenade launchers mounted on each side at the front of the turret also complement the defensive layer of the Black Panther. 

Fire-control system and optics
The K2 is equipped with an advanced fire-control system (FCS) linked to an Extremely High Frequency radar system deployed on the frontal arc of the turret, along with a traditional laser rangefinder and crosswind sensor. The system is capable of a "lock-on" mode, which can acquire and track specific targets up to a range of 9.8 km using thermographic camera. This allows the crew to fire accurately while moving as well as engage low-flying aircraft.

The FCS is also linked to an advanced gun stabilizer and trigger-delay mechanism to optimise accuracy while moving in uneven terrain. Should the trigger on the main gun be pulled at the moment the tank encounters an irregularity in the terrain, oscillation of the gun barrel will cause temporary misalignment between a laser emitter at the top of the barrel and a sensor at the base. This will delay the FCS from activating until the beam is re-aligned, improving the chances of hitting the intended target.

The Korean Gunner's Primary Sight (KGPS) and the Korean Commander's Panoramic Sight (KCPS) are present in the Black Panther as in the original series of K1A1 tanks, though modified to utilise the more advanced sensors and armaments deployed on the K2.

The commander of the tank has the ability to override the command to take control of the turret and gun from the gunner. Moreover, unconfirmed reports state that, in the event of an emergency, the vehicle can be operated by only two crew members, or even a single one. It is speculated that the FCS can automatically spot and track visible targets, compare them using the data link established with other friendly vehicles to prevent redundant target engagements, and fire its main gun without manual input.

The vehicle is fitted with an air-conditioning system and embedded training and built-in test system. The navigation system consists of a global positioning system and an inertial navigation system. The K2 MBT also has a battlefield management system connected with the C4I (Command, Control, Communications, Computers, and Intelligence) system.

Self-protection of the South Korean MBT
Details of the composite armor of the Black Panther are classified. The frontal armor has been proven to be effective at defeating the 120 mm APFSDS round fired from the L55 gun. Explosive Reactive Armor blocks are also present, with the addition of Non-Explosive Reactive Armor planned for the K2 PIP version.

Defense against incoming missiles is provided by a soft-kill anti-missile system. The K2 PIP will likely deploy a hard-kill anti-missile defense system when it is released within the next few years.

The millimeter band radar system mounted on the turret is capable of operating as a Missile Approach Warning System (MAWS). The vehicle's computer in turn can triangulate incoming projectiles, immediately warn the vehicle crew and fire off Visual and Infrared Screening Smoke (VIRSS) grenades, which can effectively block optical, infrared and radar signatures. Once the hard-kill AMS is installed, the radar system will also be responsible for tracking and targeting the incoming missiles for the AMS.

The K2 also has a Radar Warning Receiver (RWR) and radar jammer. Four all-bearing Laser Warning Receivers (LWR) are also present to alert the crew should the vehicle become "painted", and the computer can also deploy VIRSS grenades towards the direction of the beam.

An automatic fire suppression system is programmed to detect and put out any internal fires that may occur, and atmospheric sensors alert the crew if the tank enters a hazardous environment.


Mobility
The K2 Black Panther is motorized with a MT 833 diesel engine from Tognum. The engine generates 1,500 hp. and provides a power to weight ratio of 27.3hp/t. The fully automatic transmission of the K2 includes five forward and three reverse gears. The K2 can run at a maximum speed 70 km/h on surface roads and maintain speeds of up to 52 km/h in off-road conditions, while being able to maintain speeds up to 48 km/h on off-road conditions. It can accelerate from 0 to 32 km/h within 7 seconds. It can also climb 60 degree slopes and vertical obstacles 1.3 meters in height. Due to the relatively compact design of the engine, the designers were able to fit an additional Samsung Techwin gas-turbine engine into the remaining compartment space. This is capable of producing 100 horsepower (75 kW), and intended to act as an auxiliary power unit with which the tank may power its on-board systems when its main engines are turned off. It will also allow the tank to conserve fuel when idling and minimise the vehicle's thermal and acoustic signatures.

Suspension of the K2 Black Panther consists each side of six dual rubber-tyred roadwheels, track-return rollers with drive sprocket at the rear and idler at the front. The upper part of the suspension is covered by an armoured skirt. The K2 Black Panther fields an advanced suspension system, called the In-arm Suspension Unit (ISU), which allows for individual control of every bogie on the tracks. This allows the K2 to "sit", "stand" and "kneel", as well as "lean" towards one side or a corner. "Sitting" gives the tank a lower profile and offers superior handling over roads. "Standing" gives the vehicle higher ground clearance for maneuverability over rough terrain. "Kneeling" augments the angular range in which the tank's gun barrel can elevate and depress, allowing the vehicle to fire its main gun downhill as well as engage low-flying aircraft more effectively. The suspension unit also cushions the chassis from vibrations when travelling over uneven terrain, as the bogies can be adjusted individually on-the-fly. This allows the tank to kneel so that the main armament can be depressed to -10º.



The vehicle can cross rivers as deep as 5 meters using a snorkel system, which also serves as a conning tower for the tank commander. The system takes approximately 30 minutes to prepare. The turret becomes watertight while fording, but the chassis can take in 500 gallons of water to prevent excessive buoyancy from air inside the vehicle and keep the tracks planted firmly on the ground. Furthermore, the tank can enter combat-ready status as soon as it resurfaces.

Export
After competing against the Leclerc and Leopard 2, the K2 established its first export customer in Turkey. In June 2007, South Korea and Turkey successfully negotiated an arms deal contract worth ₩500 billion (approximately US$540 million) licensing the design of the K2, as well as exporting 40(+15) KT-1 trainer planes to Turkey.

On July 30, 2008, South Korea's Hyundai Rotem and Turkey's Otokar signed a contract worth $540 million for technological transfer and design assistance. The technology is to be incorporated to Turkey's own indigenous future main battle tank, dubbed MİTÜP Altay. Despite sharing many subsystems with the K2, such as protective armor and main gun, it is expected to feature a different look and have different performance characteristics. Turkey required partial dissolution of contractual coverage from the South Korean national-defense agency in January, 2011 for reasons of the delay in development.

In late September 2013, South Korea entered the K2 Black Panther in the Peruvian Army's future tank competition.

Variants
XK2  
Developmental Prototype Designation
K2  
Prototype; at least 3 examples produced
K2 "Black Panther"  
Main Production Model
K2 PIP  
"Improved" K2 base model with improved suspension, terrain scanning capabilities, an anti-tank missile system, explosive reactive armor protection and possibly a new main gun in the form of an electrothermal-chemical gun.

Specifications
Manufacturer
Hyundai ROTEM / Agency for Def. Dev. / Samsung / Doosan / World Industries Ace Corp. - South Korea
Weight
55 t (54 long tons; 61 short tons)
Length Overall 
10.8 m (35 ft 5 in)
Chassis  
7.5 metres (24 ft 7 in)
Width
3.6 metres (11 ft 10 in)
Height
2.4 metres (7 ft 10 in)
Crew
3 (commander, gunner, driver)
Armor
Classified type of composite armour with ERA and NERA modular add-on armour in addition to soft-kill and hard-kill anti-missile defense systems
Main armament
120 mm (4.72 in) 55 caliber smoothbore gun (40 rounds)
Secondary armament
1× 12.7×99mm (.50 BMG) K6 heavy machine gun (3,200 rounds)
1× 7.62×51mm NATO coaxial machine gun (12,000 rounds)
Ammunition
40 x 120mm projectiles
3,200 x 12.7mm ammunition
12,000 x 7.62mm ammunition
Engine
4-cycle, 12-cylinder water-cooled diesel
1,500 hp (1,100 kW)
Power/weight
27.2 hp/tonne
Suspension
In-arm Suspension Unit
Operational range
450 kilometres (280 mi)
Speed
Paved road 
70 km/h (43 mph)
Cross country 
50 km/h (31 mph)
Acceleration 
from 0–32 km/h (0–20 mph) in 7 seconds
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