South Korea struggled to come up with countermeasures in the 1970s when
North Korea deployed
BM-21 Grad, a new
multiple rocket launcher (MRL) brought in from the
Soviet Union. At that time, the possibility of fatal casualties increased if
towed howitzers,
self-propelled howitzers, and multiple rocket launchers deployed by the
North Korean military fired at the South Korea. The South Korean military developed the
K136 Kooryong in 1978 to counter the threat of North Korean artillery. With the deployment of Kooryong to the
South Korean Army since the 1980s, it was temporarily able to maintain a similar balance to North Korea's artillery power.[6]
However, over time, problems such as the discontinuation of the main parts of the aging Kooryong system have been revealed, and as North Korea developed a large-caliber rocket with a further increased range, the military pointed out that Kooryong has a limit to respond in wartime. Later, from 2009 to 2013, it developed a new multiple rocket launcher system with an automated
fire control system compatible with the ammunition used in the
M270 MLRS, which the South Korean military had previously operated, for replacing the aging Kooryong system.[6] The K239 development program was the first defense development program led by South Korean private defense companies, unlike other defense development programs conducted under the leadership of the
Agency for Defense Development (ADD).
Design and development
The K239 Chunmoo is a self-propelled multiple launch rocket system (MLRS) capable of firing several different guided or unguided artillery rockets.
The K239 is capable of launching K33 131 mm rockets, but not 130 mm rockets (such as the K30, K37 and K38), which are used in the existing K136 Kooryong rocket artillery system. The K239 launcher carries two launch pods that can hold three types of rockets:
20 K33 131 mm unguided rockets, previously used on the K136 Kooryong, with a range of 36 kilometers (22 mi) (40 total).[7]
Six KM26A2 230 mm rockets which are based on the M26 227 mm unguided
DPICM rocket used in M270 MLRS vehicles operated by the South Korean Army, with a range of 45 kilometers (28 mi) (12 total).[8]
Six 239 mm chunmoo guided rockets (CGR080) with either high explosive penetration
warheads, or
cluster bombs with 300 bomblets, designed for the K239 Chunmoo with a range of 80 kilometers (50 mi) (12 total).[9][10]
The CGR080 239 mm rockets are 3.96 meters (13.0 ft) long and
GPS-aided
INS guided, and the rocket is designed to be equipped with two types of warheads, a high explosive warhead developed as a
bunker buster, or a cluster bomb warhead, with hundreds of bomblets, for use against personnel in a wide area. The high explosive warhead bursts on impact for use against personnel and bursts after a delay to destroy bunkers; it was a requirement of the
ROK Army for the guided rocket to have a penetrator warhead to be used as a bunker buster solution against the large number of bunkers along the
DMZ. A guided rocket containing cluster bombs is capable of extensive artillery fire on a specific area of three times the area of a
soccer field.[9]
Two different types of rocket pods can be loaded at once. The rocket pod can launch six 239 mm rockets in 30 seconds and a total of 12 rockets in one minute, and it's possible to reload two rocket pods in seven minutes. The launch vehicle is based on a
Doosan DST (now
Hanwha Defense) K239L 8×8 truck chassis with an armored cab that protects its 3-man crew from small arms fire and artillery shell splinters as well as providing
NBC protection. The vehicle can climb 60% slopes (20 degrees), and is equipped with an
Anti-lock Braking System (ABS),
Run-flat tires, and a
Central Tire Inflation System (CTIS).[11][12] Each Chunmoo launcher is paired with an K239T Ammunition Support Vehicle (ASV) which uses the same type of truck chassis and carries four reload pods.[11] An ROK Army Chunmoo battery consists of 18 vehicles and uses a
K200A1 as a command vehicle.[13][14]
Origins
Development of the K239 Chunmoo began in 2009 and was completed in late 2013. South Korea's
Defense Acquisition Program Administration (DAPA) spent 131.4 billion won ($112.4 million) on the project to create a replacement for the K136 Kooryong MLRS. Initial production was carried out in August 2014. The main purpose of the Chunmoo MLRS is to suppress
North Korea's artillery systems in case of war.
In order to reduce operational and maintenance costs, the Chunmoo launcher system is mounted on the modified chassis of a four-axle Korean truck which has less cross-country ability when compared to tracked vehicles.
The artillery unit does not have permanently mounted launch rails. This allows the Chunmoo to transport and use launch containers containing different types of rockets from one platform.[15]
The cockpit of the vehicle is armoured to provides protection against small-calibre weapons and artillery shell fragments.[5]
It is equipped with a load-lifting device, similar to that of the MLRS. The estimated maximum recharging time is 10 minutes.
The Chunmoo system includes an ammunition transport and charging vehicle on a common 8x8 chassis, and carries two sets of transport and discharge containers.[11]
The Korean army requested that the Chunmoo be designed to fire different types of ammunition. This includes 227 mm standard MLRS, but also 131 mm and 239 mm South Korean rockets. The maximum range of the 131 mm ammunition is up to 36 kilometers (22 mi) and approximately 80 kilometers (50 mi) for the 239 mm ammunition.
Rockets can be fired from the cockpit of the combat vehicle, or by using a remote fire control device.
Chunmoo system was specified to be transportable by aircraft of the
C-130 type, in order to be easily deployed.
In October 2014, South Korea announced the purchase of 58 Chunmoo MLRS. In August 2015, the ROK Army began deploying the Chunmoo batteries.[16][17]
Improvements
Extended-range rockets
In June 2022, South Korean
Agency for Defense Development (ADD) revealed efforts to increase the range of the Chunmoo's 239 mm rockets to 200 kilometers (120 mi). This would give them range similar to the North Korean
300 mm KN-09. Research and development efforts are evaluating ducted rocket propulsion technology, which adds an air inlet that absorbs external air and combines it with a gas generator for combustion to produce greater thrust, as well as a valve that controls the flow of gas for maneuvering. There is also research into a larger 400 mm rocket, which the Chunmoo could carry four of.[18][19][4]
On 27 April 2022, South Korean Defense Acquisition Program Administration announced a plan to develop a vehicle-mounted tactical surface-to-surface guided weapon (Ure-2). The purpose of this development project is to improve the existing Ure-1 to increase the range from 180 kilometers (110 mi) to 290 kilometers (180 mi) and integrate tactical ballistic missile systems into various types of
Transporter Erector Launcher (TEL) such as the K239 Chunmoo. The development project is scheduled to begin in 2023 and plans to complete the development with a total budget of 1.56 trillion
won (
US$1.232 billion) by 2034.[20]
On 21 December 2022, the Agency for Defense Development conducted a public test of Ure-2 under further development at
Anheung Proving Ground. The missile was mounted on the K239 Chunmoo vehicle and hit a target 200 kilometers away after it was launched.[21]
On 13 March 2023, the 150th Defense Acquisition Program Promotion Committee deliberated and approved the basic strategy and system development plan for developing a vehicle-mounted tactical surface-to-surface missile, and the revised plan included the agenda of completing the development of Ure-2 by 2032, two years earlier than the previous plan.[22]
On 24 April 2024, ADD conducted a test launch of CTM290 integrated into the Homar-K system in the presence of Poland's Deputy Defense Minister
Paweł Bejda and government officials from each country. The missile that was launched successfully hit the target after flying for more than 200 seconds.[23]
Variants
Homar-K
Homar-K (English:
Lobster, K for Korean) is a Polish multiple launch rocket system combining the improved K239 launcher and domestic
Jelcz P883.57 8x8 truck chassis. Built to meet Polish military requirements, the system will ultimately integrate a Polish-designed
TOPAZ fire control system and be serviced with a South Korean CGR080 239 mm guided rocket produced in Poland under license and a 600 mm short-range
tactical ballistic missile known as the CTM290 (Chunmoo Tactical Missile)[15] with a range of 290 kilometers (180 mi).[24] Hanwha Aerospace is undergoing further development to use the Polish 122 mm rocket in the Homar-K system.[25]
Poland contracted for 72 systems in the initial delivery.[26]
Export
United Arab Emirates
In 2017, Hanwha Defense announced at ADEX (Aerospace & Defense Exhibition) in
Seoul that it had signed a nondisclosure contract worth 700 billion
won to export K239 Chunmoo to a certain country in the
Middle East, and it was later revealed that the
United Arab Emirates signed a supply contract with Hanwha Defense, including 12 K239 Chunmoos, 12 K239T Ammunition Support Vehicles, GPS-guided rockets, and munitions.[27][28] Later, In February 2021, 12 K239 Chunmoo systems and 12 K239T Ammunition Support Vehicles were delivered to the United Arab Emirates.[29]
Saudi Arabia
At the World Defense Show in
Riyadh, Saudi Arabia, on March 9, 2022, Hanwha signed a defense export contract worth 1 trillion won (worth $800 million) with the
Saudi Arabian Ministry of Defense, but details of the contract were not known.[30] It was later confirmed on 31 March 2023 that an unknown number of Chunmoo was being serviced by the
Royal Saudi Land Forces.[31] As in the past cases with the UAE, it is presumed that it has signed a non-disclosure contract.
Poland
On 27 August 2022, Poland's defense minister,
Mariusz Błaszczak, said there are ongoing negotiations to acquire South Korea's rocket artillery system.[32] On 13 October 2022, Polish Armament Agency announced that the negotiations with South Korea to acquire nearly 300 K239 Chunmoo systems had been completed and the
framework agreement will be signed on October 17.[33][34] Poland had originally intended to procure 500 American
M142 HIMARS launchers, but such an order could not be fulfilled in a satisfactory timeline, so decision was made to split the HIMARS order into two stages, buying less of them and adding Chunmoo procurement; the first South Korean launchers are to be delivered in 2023.[35] A supply contract for 288 Chunmoo MLRS mounted on
Jelcz 8x8 chassis and equipped with Polish TOPAZ Integrated Combat Management System along with 23 thousand missiles with the range of 80 and 290 kilometers was signed in Poland on October 19, 2022.[36][37] On 20 August 2023, one Homar-K, which completed system integration and testing in South Korea, was deployed to the
18th Mechanised Division of the
Polish Land Forces after being delivered to Poland.[38]
18th Infantry Division – Received 3 Homar-K as of November 2023.
Huta Stalowa Wola (HSW) is currently working on integrating the 15 delivered K239 launcher modules into the Jelcz truck chassis.[39][40]
Philippines: Officials from the Armed Forces of the Philippines attended the test-firing of KTSSM-II missiles from a K239 Chunmoo-I Multiple Launch Rocket System unit on December 21, 2022.[44] The platform is being considered alongside the
M142 HIMARS[45] and the
Elbit PULS.[46][47]
Romania: On 3 February 2023, Hanwha Aerospace signed an MOU with
ROMARM SA, Romania's state-owned defense company, for the production of military equipment and ammunition.[48][49]
See also
K136 Kooryong - South Korea's 36 extended multiple rocket artillery system
^The name Chunmoo (天橆) means to cover the sky. The name was given because the smoke from the rocket covered the sky when 20 131 mm rockets were launched in a row.
References
^Kim Dae-yeong (26 April 2017).
"천무". Bemil. Archived from
the original on 14 October 2022. Retrieved 14 October 2022.