Hyunmoo


Hyunmoo is a series of missiles reverse engineered by South Korea.
The Hyunmoo is the only ballistic missile reverse engineered by South Korea that was actually deployed. This missile improved the first stage propelling device that was a problem in the Paekgom. The first test-launch of the Hyunmoo was successful in 1982; following domestic twists and turns due to internal political situation of South Korea until the second test-launch in September 1985 flight test by the Defense Systems Test Center.

Hyunmoo-1

Hyunmoo-1 is the first ballistic missile developed by South Korea,. In 1986, South Korea succeeded in a test-launch in the current capacity with a payload of 480 kg and a range of 180 km. The US, however, withheld the export approval of Hyunmoo in 1990, and requested South Korea to provide technical information on the Hyunmoo. It also requested a note by South Korea promising not to develop missiles with a range over 180 km. After providing the US with the guarantee correspondence, South Korea started to produce a limited number of Hyunmoo missiles and was under the inspection of the United States until the production ended.
The Hyunmoo system , has been indigenously developed in the Agency for Defense Development and now it is in service by the South Korean army.
The missile is launched from the mobile launcher and fire-controlled by the battery control van. The Hyunmoo-1 missile, which is propelled by two-stage solid rocket motor and features inertial guidance and control system, can reach the heart of its intended targets under any weather conditions without any commands from the ground after fire. The missile is approximately 12 m long, weighing 5 tons.

Hyunmoo-2

The Hyunmoo-2A was the first of South Korea's attempts to develop an newer indigenous ballistic missile with an increased range, over Hyunmoo-1. Due to an agreement in 2001 with the MTCR, the missile's range was limited to 300 km. It is carried by a 4 axle transporter erector launcher.
Eventually the missile range was increased to 800 km which spurred on the development of Hyunmoo-2B and Hyunmoo-2C.
South Korea released the upgraded version of Hyunmoo-2A, named Hyunmoo-2B, which was put into service in late 2009. This ballistic missile had an increased range of 500 km. If launched from the central region of South Korea, all of North Korean territory is under a 550-kilometer striking range. Its accuracy is 30 m circular error probable.
The upgraded version of Hyunmoo-2B, named Hyunmoo-2C, was unveiled in 2017. The ballistic missile has an increased range of 800 km, but with a warhead weight reduced by half, and uses a different type of TEL with 5 axles, and launch canister that is wider and longer, suggesting increased weight. The warhead section features maneuvering fins, which suggests a maneuverable reentry vehicle or some type of terminal guidance for increased accuracy. It has extreme accuracy, ideal as a bunker buster. If fired from southernmost Jeju Island, it can still reach all of North Korea but will be outside the range of North Korean Scud missiles.
The missile is suspected to be a derivative of the Russian Iskander missile. From video and pictures published by the Korean military and media, the Hyunmoo-II missile's head is similar to the Russian Iskander missile and the double cone structure of China's M20 missile, missile shape and Iskander missile is very similar. Even the tail is the Iskander-style truncated delta wing, which shows the missile and the Iskander missile cut off the blood relationship, a comprehensive judgment that should be the result of the output of the Iskander missile technology. There is precedent for Russia and South Korea cooperation. Seoul's KM-SAM air-defence system is based on the Russian 9M96E missile developed for the S-400 Triumf system but Hyunamoo II has the general shape of the American ATACMS missile.

Hyunmoo-3

In 2006, the South Korean defense ministry released a statement that it had been testing several cruise missiles under the series of Hyunmoo-3 which were similar to the American Tomahawk. The first official model, Hyunmoo-3B, was unveiled in 2009 with an maximum range of 1,000 km meaning it could hit any part of North Korea as well as some parts of China and Tokyo Unlike Hyunmoo-2 missiles, the Hyunmoo-3 missiles would use cruise missile technology. It uses the same four axle TEL like the Hyunmoo 2.
The Hyunmoo-3C missile's deployment is still unknown. The missile would have an increased maximum range of 1,500 km. Analysts agree that numerous test launches of the Hyunmoo-3C missiles have been carried out and development of the missile continues. However, deployment has yet to be completed.
Hyunmoo-3D/Hyunmoo-4 are under speculation however work on such a missile is unlikely to occur any time soon due to regulations on missile range. Some cite its deployment for the late 2030s, however, such a missile is still a grey area to the public.

Hyunmoo-4

While South Korean military missiles are currently capable of destroying out North Korean structures on land, it says it needs heavier warheads to be able to destroy North Korea's underground facilities and bunkers. The new Hyunmoo IV ballistic missile will likely be fitted with a new 1,000-kilogram warhead capable of destroying North Korea’s underground military facilities, command centers and its leadership and is probably a variant of the extended-range Hyunmoo-2C missile currently under development. Seoul has reached a de facto deal with Washington to revise their missile development guidelines so that it can double the maximum payload of its ballistic missiles. Two Hyunmoo-4 missiles were test-fired in April 2020, with one of them misfiring.

Notable events

On 23 June 2017, South Korea unveiled footage of a successful missile test launch of a Hyunmoo-2C missile. Unlike its predecessor, which had a maximum range of 500 km, the Hyunmoo-2C has a maximum range of 800 km and thus is capable of hitting any part of North Korea. South Korean President Moon Jae-in was shown to be observing the missile launch at the time.
On 4 July 2017, South Korea carried out a joint ballistic missile drill with the U.S. where they launched 2 Hyunmoo-2B missiles and 2 ATACMS missiles. The drill was seen as a response to North Korea's supposed successful test launch of an ICBM.
On 4 September 2017, President Trump agreed to lift the 500 kg limit on South Korea's missile warheads. This would allow South Korea to develop and deploy missiles with a warhead weighing up to 1,000 kg. This would enable South Korea to target and destroy virtually all of North Korea's underground facilities and hardened bunkers.
On 6 September 2017, South Korea's MoD announced the upcoming development of a new missile dubbed the "Frankenmissile." The Hyunmoo missile variant would carry a warhead weighing up to 1,000 kg and would be used to target key North Korean sites both above and underground.
During Donald Trumps visit to Seoul in 2017, U.S. and South Korea agreed to eliminate any limit on South Korean missiles.
During a military parade North Korea displayed a short range ballistic missile similar in design to the Hyunmoo-2 on 8 February 2018 that is thought to have been tested in August 2017, according to South Korean military source that disclosed details of the test to Chosun Ilbo. Designated as KN-23 by the US DoD, the missile was test fired on 4 May and 9 May 2019 where two missiles were launched in each of the tests.

Variants

Specifications

MissileHyunmoo-1
Length overall
at second stage
Diameter booster
at second stage
Fin span booster
at second stage
Mass at launch
at second stage
Maximum speedMach 3.65
Range
Ceiling
First stageHercules M42 solid-fueled rocket cluster

978 kN total
Second stageThiokol M30 solid-fueled rocket
44.4 kN
Warhead conventionalT-45 HE warhead weighing
and containing of HBX-6
M17 blast-fragmentation