# Hwasong-10

The Hwasong-10 (Korean: 《화성-10》형; Hancha: 火星 10型; lit. Mars Type 10) is a mobile intermediate-range ballistic missile developed by North Korea.
Hwasong-10 resembles the shape of the Soviet Union's R-27 Zyb submarine-launched missile, but is slightly longer. It is based on the R-27, which uses a 4D10 engine propelled by unsymmetrical dimethylhydrazine (UDMH) and nitrogen tetroxide (NTO). These propellants are much more advanced than the kerosene compounds used in North Korea's Scuds and Hwasong-7 (Nodong) missiles.
Assuming a range of 3,200 km (2,000 mi), the Hwasong-10 could hit any target in East Asia (including US military bases in Guam and Okinawa). The North Korean inventory of the missile is less than 50 launchers.

## Description

The Hwasong-10's rocket design is a liquid fuel rocket, generally believed to use a hypergolic combination of unsymmetrical dimethylhydrazine (UDMH) as fuel, and nitrogen tetroxide (NTO) as oxidizer. Once the fuel/oxidizer combination are fed into the missile, it could maintain a 'ready to launch' condition for several days, or even weeks, like the R-27 SLBM, in moderate ambient temperatures. A fueled Hwasong-10 would not have the structural strength to be safely land transported, so would have to be fueled at the launch site.
It was originally believed that the rocket motors of Hwasong-10 were the same as those within the second stage of the Taepodong-2, which North Korea unsuccessfully test fired in 2006. However analysis of the Unha-3 launch, believed to be based on the Taepodong-2, showed that the second stage did not use the same fuel as the R-27, and is probably based on Hwasong-7 (Nodong) rocket technology.
Before its test flight, it was believed that there was a possibility that the Hwasong-10 would use the Nodong's kerosene and corrosion inhibited red fuming nitric acid (IRFNA) propellants, reducing the missile's range by about half.
However, it is unlikely that North Korea uses IRFNA propellants which would reduce its range by about half, after the experts acknowledged that the 22 June 2016 test could have had a range of 3,150 km (1,960 mi) if the missile was not launched in the lofted trajectory.
It was also decided that, as the Korean People's Army's MAZ-547A/MAZ-7916 transporter erector launcher could carry 20 tonnes, and the R-27 Zyb was only 14.2 tonnes, the R-27 Zyb's fuel/oxidizer tank could be extended by approximately 2 m (6.6 ft).

## History

In the mid-1990s, after the collapse of the Soviet Union, North Korea invited the Makeyev Design Bureau's ballistic missile designers and engineers to develop this missile, based on the R-27 Zyb. In 1992, a large contract between Korea Yon’gwang Trading Company and Makeyev Rocket Design Bureau of Miass, Russia was signed. The agreement stated that Russian engineers would go to the DPRK and assist in the development of the Zyb Space Launch Vehicle (SLV).
Hwasong-10 was first revealed to the international community in a military parade on 10 October 2010 celebrating the Workers' Party of Korea's 65th anniversary, although experts believe these were mock-ups of the missile.
In April 2013, North Korea was reported to deploy two Hwasong-10 to Wonsan in preparation for a test-fire. Two moblie launchers was reported to continuously moved in and out of a facility. Four to five wheeled vehicles, appears to be TELs, were also spotted to travel around South Hamgyong Province. These actions aimed at making difficult to US and South Korea. A month later, North Korea removed two missiles from launchers.
Since April 2016, the Hwasong-10 has been tested a number of times, with two apparent partial successes and a number of failures. In May 2017, North Korea successfully tested a new missile, the Hwasong-12, with a similar range to the Hwasong-10. It had been displayed in the April 2017 military parade on the Hwasong-10 mobile launcher, and the Hwasong-12 may be intended to replace the Hwasong-10 which has been shown unreliable during its test programme. The Hwasong-10 was not shown in the February 2018 military parade, suggesting that the design had not been deployed.

## List of Hwasong-10 tests

| Attempt | Date | Location | Pre-launch announcement / detection | Outcome | Additional notes |
| 1 | 15 April 2016 5:30 am Pyongyang Standard Time (PST) | Wonsan | South Korea detected one or two Hwasong-10 missile(s) near Wonsan a day before the test. | Failure | Both United States and South Korea "detected and tracked" the missile followed by the confirmation of launch failure. South Korea further claims the missile in this test deviated from a "normal" trajectory. North Korea kept silent on the test despite the day is the 104th anniversary of the birthday of Kim Il Sung. |
| 2 | 28 April 2016 6:10 am PST | Northeastern coast | None | Failure | The missile crashed a few seconds after liftoff. North Korea kept silent on the test. |
| 3 | 28 April 2016 6:56 pm PST | Wonsan | None | Failure | According to United States sources, the missiles went an estimated 200 m (660 ft) off the launchpad. North Korea kept silent on the test. |
| 4 | 31 May 2016 5:20 am PST | Wonsan | None | Failure | Missile exploded on site. North Korea kept silent on the test. |
| 5 | 22 June 2016 5:58 am PST | Wonsan | A day before the test, South Korea spotted a Hwasong-10 near east coast. | Success (North Korea) Failure (South Korea and United States | The missile crashed at 150 km (93 mi) away from the site. It is the first successful Hwasong-10 test that safely launched from the launch site, however, the missile still exploded in midair. It is possible that North Korea could have launched the missile at a normal angle, and intentionally terminated its flight early to keep it from overflying Japan at 150 km (93 mi). |
| 6 | 22 June 2016 5:58 am PST | Wonsan | A day before the test, South Korea spotted a Hwasong-10 near east coast. | Success (North Korea) Partial success (South Korea and United States) | According to South Korea, US and Japan, the missile achieved 1,000 km (620 mi) apogee, flew 400 km (250 mi) and landed in Sea of Japan. North Korea hailed the twin test in 22 June 2016 as a 'complete success' in the state media. North Korea also stated that the missile accurately landed in the targeted waters 400 km (250 mi) away after flying to the maximum altitude of 1,413.6 km (878.4 mi) along the planned flight orbit. The missile was officially named as Hwasong-10. The missile appears to be intended to fly at a steeper angle than normal to avoid overflying Japanese airspace, rather than a normal trajectory, in which the missile could reach its maximum range of 3,500 km (2,200 mi) or more. |
| 7 (Alleged) | 15 October 2016 12:03 pm PST | Kusong | None | Failure | Initially, the US military identified these tests as failed tests of Hwasong-10, without specifying details. North Korea kept silent on these reports. Five days after the first test, a second launch took place just hours before the start of the final 2016 US presidential election debate. It is possible that the missile using for the tests could be Hwasong-13 (KN-08), Pukguksong-2 or Hwasong-12. |
| 8 (Alleged) | 20 October 2016 7:00 am PST | Kusong | None | Failure | Initially, the US military identified these tests as failed tests of Hwasong-10, without specifying details. North Korea kept silent on these reports. Five days after the first test, a second launch took place just hours before the start of the final 2016 US presidential election debate. It is possible that the missile using for the tests could be Hwasong-13 (KN-08), Pukguksong-2 or Hwasong-12. |

## Operators
### Current operators

* North Korea: According to one source, more than 200; other source claims 12 deployed. 16 were seen at once during the 10 October 2010 military parade, although experts contacted by the Washington Post believed these were mock-ups of the missile.

### Suspected operators

* Iran: 19, according to a leaked, classified U.S. State Department cable. The Khorramshahr, which was first publicly displayed on 22 September 2017, is likely derived from Hwasong-10.