Wikipedia

DF-21

For the China Railways DF21 narrow gauge locomotive, see List of locomotives in China § Diesel-electric transmission.

The Dongfeng 21 (DF-21; NATO reporting name CSS-5 - Dong-Feng (simplified Chinese: 东风; traditional Chinese: 東風; lit. 'East Wind') is a two-stage, solid-fuel, single-warhead medium-range ballistic missile (MRBM) developed by China's Changfeng Mechanics and Electronics Technology Academy. A part of the Dongfeng missile family, the DF-21's development started in the late 1960s, and it was completed around 1985–86, but not deployed until 1991. It was developed from the JL-1 submarine-launched missile, and is China's first solid-fuel land-based missile. The U.S. Department of Defense in 2008 estimated that China had 60-80 missiles and 60 launchers;[7] approximately 10-11 missiles can be built annually.[8]

DF-21/CSS-5 Mod 1
DF-21 and transporter erector launcher vehicle at the Beijing Military Museum.
TypeMRBM/IRBM
Place of originChina
Service history
In service1991
Used byPeople's Liberation Army Rocket Force
Royal Saudi Strategic Missile Force
Specifications
Mass14,700 kilograms (32,400 lb)
Length10.7 metres (35 ft)
Diameter1.4 metres (4.6 ft)
Warheadconventional 600kg: 1, or 5-6 (improved variant)[1] nuclear 200-300-500 kt nuclear[2]
EngineSolid fueled
Operational
range
1,770 km (1,100 mi) (DF-21/DF-21A)[3]
1,700 km (1,100 mi) (DF-21C)
1,500 km (930 mi; 810 nmi) (DF-21D ASBM)[4]
Maximum speed Mach 10 (estimated maximum before re-entry)
Guidance
system
Inertial + terminal active radar guidance[5]
AccuracyDF-21 700m, DF-21A 50m, DF-21B 10m CEP (with BeiDou Navigation Satellite System and active radar)[6]
Launch
platform
Mobile launcher

Originally developed as a strategic weapon, the DF-21's later variants were designed for both nuclear and conventional missions. It is thought to be able to carry a high explosive, submunition for tactical/theater-level missions, or a 300 kt nuclear warhead for strategic strikes. The latest variant, the DF-21D, was said to be the world's first anti-ship ballistic missile (ASBM). The DF-21 has also been developed into a space warfare-capable anti-satellite weapon/anti-missile weapon carrier.

Though the launcher vehicle itself is mobile to reduce vulnerability, an actual launch unit requires support vehicles that can cover a 300×300-meter area, making it hard to move quickly and easier to detect. Also, the wheeled launcher is not made to travel off-road and requires firm ground when firing to prevent backblast and debris damage due to the hard launch, restricting its firing locations to roads and pre-made launch pads.[9]

DF-21/A/C (CSS-5 Mod-1/2/3)

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The basic variant DF-21 had a range of 1,770+ km,[3] and a payload of 600 kg (1,300 lb) consisting of a single 500 kt nuclear warhead, with an estimated circular error probable (CEP) of 300~400 m; this version did not enter operational service.[5] The DF-21A was operational by 1996 and has improved accuracy with an estimated CEP of 100~300 m.[5] This version is reported to have a similar 1,770+ km range,[3] with a potential extended range of 2,150 km (1,340 mi).[9][10]

Revealed in 2006, the DF-21C is a terminally guided version[11] that has a maximum range believed to be about 1,700 km (1,100 mi)[12] and accuracy estimated to be 50~100m.[13] The missile was the first dual-capable version, able to be armed with either a nuclear or conventional warhead. In 2010, the DF-21C was being deployed in central Western China.[9]

DF-21D (CSS-5 Mod-4) Anti-ship ballistic missile

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See also: Anti-ship ballistic missile
 
The DF-21D missile as seen after the military parade on September 3, 2015.
 
Range of various Chinese missiles (2007); DF-21 A/B range in red.

Development

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This is an anti-ship ballistic missile that has a maximum range exceeding 1,450 kilometres (900 mi; 780 nmi), according to the U.S. National Air and Space Intelligence Center. The Intelligence Center did not believe it was deployed in 2009.[12] As of 2009, the guidance system was thought to be still in an evolutionary process as more UAVs and satellites are added.[14]

The US Department of Defense stated in 2010 that China has developed and reached initial operating capability (IOC)[15] of a conventionally armed[16] high hypersonic[17] land-based anti-ship ballistic missile based on the DF-21. This is the first ASBM and weapon system capable of _targeting a moving aircraft carrier strike group from long-range, land-based mobile launchers.[18][19][20] The DF-21D is thought to employ maneuverable reentry vehicles (MaRVs) with a terminal guidance system. Such a missile may have been tested in 2005-6, and the launch of the Jianbing/Yaogan satellites would give the Chinese _targeting information from SAR (synthetic-aperture radar) and visual imaging respectively. The upgrades enhance China's ability to prevent US carriers from operating in the Taiwan Strait.[21] Some have also suggested China could develop a DF-21D with multiple reentry vehicles.[22]

Guidance and navigation

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Between 2009 and 2012, China launched a series of satellites to support its ASBM efforts:

China was reported to be working on an over-the-horizon radar in 2013 to locate the _targets for the ASBM.[24] An apparent test of the missile was made against a _target in the Gobi Desert in January 2013.[25]

Re-entry vehicle

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In 2014, the U.S. Navy reported that images that have appeared on the internet showed similarities of a DF-21D re-entry vehicle to the American Pershing II missile's RV, which was withdrawn from service in 1988. The Pershing II's RV weighed 1,400 lb (640 kg) and was fitted with four control fins to perform a 25-G pull-up after reentering the atmosphere, traveling at Mach 8 and then gliding 30 nmi (35 mi; 56 km) to the _target to pitch into a terminal dive. Army training manuals about the missile are available on the internet and public open-source literature extensively describes it; the DF-21 has a comparable range and payload. Though much is made of the DF-21D's damage infliction ability based solely on velocity and kinetic energy, the Australian Strategic Policy Institute has calculated that the energy of an inert 500 kg (1,100 lb) RV impacting at Mach 6 had similar energy to the combined kinetic and explosive power of the American subsonic Harpoon anti-ship missile, which is one-quarter the energy of the Russian supersonic 12,800 lb (5,800 kg) Kh-22 missile traveling at Mach 4 with a 2,200 lb (1,000 kg) warhead.[26]

Impact on naval warfare

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In 2009, the United States Naval Institute stated that there was "currently ... no defense against [a warhead able to destroy an aircraft carrier in one hit]" if it worked as theorized. It was reported in 2010 that China was finalizing development of a MaRV warhead for the DF-21.[27][28][29] The United States Navy has responded by switching its focus from a close blockade force of shallow water vessels to return to building deep water ballistic missile defense (BMD) destroyers.[17] The United States has also assigned most of its ballistic missile defense capable ships to the Pacific, extended the BMD program to all Aegis destroyers and increased procurement of SM-3 BMD missiles.[30] The United States also has a large network optimized for tracking ballistic missile launches which may give carrier groups sufficient warning in order to move away from the _target area while the missile is in flight.[31] Kinetic defenses against the DF-21D would be difficult. The Navy's primary ballistic missile interceptor, the SM-3, would not be effective since it is designed to intercept missiles in the mid-course phase in space, so it would have to be launched almost immediately to hit before reentry or from an Aegis ship positioned under its flight path. The SM-2 Block 4 can intercept missiles reentering the atmosphere, but the warhead will be performing high-G maneuvers that may complicate interception.[32] By 2016, the US Navy was testing the vastly more capable SM-6, which is designed to intercept ballistic missiles in the terminal phase.[33] The SM-6 began deployment in 2013.[34]

In late 2013, a Russian Military Analysis report of the DF-21D concluded that the only way to successfully counter it would be through electronic countermeasures. Conventional interceptions of high-speed objectives have worked in the past, with the Russian report citing the 2008 interception of a malfunctioning satellite by a U.S. cruiser, but in that situation the warship had extensive knowledge of its location and trajectory. Against an attack from the Mach 10 DF-21D without knowing the missile's launch point, the U.S. Navy's only way to evade it would be through electronic countermeasures.[35]

Use of such a missile has been said by some experts to potentially lead to nuclear exchange, regional arms races with India and Japan, and the end of the INF Treaty between the United States and the Soviet Union, to which the People's Republic of China is not a party.[36][37]

Skepticism

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The emergence of the DF-21D has some analysts claiming that the "carrier killer" missiles have rendered the American use of aircraft carriers obsolete, as they are too vulnerable in the face of the new weapon and not worth the expense. Military leaders in the U.S. Navy and Air Force, however, do not see it as a "game changer" to completely count carriers out.[citation needed]

First, the missile may not be able to single-handedly destroy its _target, as the warhead is believed to only be enough to inflict a "mission kill" that makes a carrier unable to conduct flight operations.[38]

Secondly, there is the problem of finding its _target. The DF-21D has a range estimated between 1,035 to 1,726 mi (899 to 1,500 nmi; 1,666 to 2,778 km), so a carrier battle group would need to be located through other means before launching. Over-the-horizon radars cannot pinpoint a carrier's exact location, and would have to be used in conjunction with Chinese recon satellites. Though recon aircraft and submarines could also be used to look for the carrier, they are vulnerable to the carrier battle group's defenses.[38]

Finally, although the DF-21D has radar and optical sensors for tracking, it has not yet been tested against a ship _target moving at-sea at up to 55 km/h (30 kn; 34 mph), let alone ones using clutter and countermeasures. The missile's "kill chain" requires processing and constantly updating a carrier's location details, preparing the launch, programming information and firing. The U.S. military's AirSea Battle concept involves disrupting such kill chains.[38] Some U.S. analysts believe that the DF-21D does not fly any faster than Mach 5.[39]

The DF-21D may also not be as fast as theorized. While ballistic missiles reenter the atmosphere at speeds between Mach 8-15 at an altitude of 50 km (160,000 ft), increasing air resistance in the denser low-atmosphere region reduces terminal speed to around Mach 2 at 3–5 km (9,800–16,400 ft). It cannot acquire its _target until this point due to ionization blockage, leaving a relatively short time to actually search for a ship. This could enable the _target to leave the area if the missile is detected soon enough before it engages its terminal sensors, and the slower speed upon reentry leaves it vulnerable to missile interceptors.[40]

Appearances and deployments

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The missile was shown to the public during the parade in Beijing celebrating 70 years since the end of World War II on September 3, 2015.[41][42] A parade video shows missiles marked as DF-21D.[43]

On 26 August 2020, along with a DF-26B, a DF-21D was launched into an area of the South China Sea between Hainan and the Paracel Islands, one day after China said that an American U-2 spy plane entered a no-fly zone without its permission during a Chinese live-fire naval drill in Bohai Sea off its north coast[44] and came as Washington blacklisted 24 Chinese companies and _targeted individuals it said were part of construction and military activities in the South China Sea.[45][46][47] US officials subsequently assessed that the People's Liberation Army Rocket Force (PLARF) had fired four medium-range ballistic missiles in total.[46][45] The missile tests drew criticism from Japan, the Pentagon and Taiwan.[46][45][48]

DF-26

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Main article: DF-26

The DF-26 is an enhancement of the DF-21 with range increased to more than 5,000 km (3,100 mi). Its existence was officially confirmed by the Chinese state in the mid-2010s, but it had already been in service for several years.[11][49]

On 26 August 2020, a DF-26B was fired from Qinghai province into an area between Hainan and the Paracel Islands as a response to a U.S. U-2 spy plane entering into a no-fly zone during a Chinese live-fire naval drill the day earlier.[44]

SC-19

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Anti-satellite and Anti-ballistic missile version based on DF-21. Multiple test was conducted. The missile is capable of _targeting ballistic missiles and satellite outside of the Earth atmosphere.[50][51]

KF-21

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The "KF-21" (possible Chinese designation,[52] NATO designation: CH-AS-X-13) is reported to be an air-launched variant of the DF-21[53] with a nuclear or anti-ship role. It is a two-stage missile with a range of 3000 km. Weight may have been reduced by using composite materials.[54] The War Zone reported two possible warhead configurations; a DF-21D-style "double-cone" tip, and a hypersonic guild vehicle (HGV) similar to the DF-ZF on the DF-17 missile.[52]

It was in development by 2018.[53] In 2018, the United States projected it would be ready for deployment by 2025.[54]

The missile is carried by the Xian H-6N bomber; the aircraft has a recessed underside to carry the missile externally.[53]

Saudi Arabian purchase

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Main article: Royal Saudi Strategic Missile Force

The DF-21 may have been exported to Saudi Arabia.[55] In January 2014, Newsweek reported that the missiles were purchased in 2007. Conventionally-armed DF-3 missiles were bought by Saudi Arabia in 1988, but were not used during the 1990-1991 Gulf War due to their poor accuracy and the potential for collateral damage. Saudi Arabia wanted the shorter-ranged but much more accurate DF-21 as an upgrade. The United States approved of the purchase on the condition that the missiles were conventionally-armed.[56] The Central Intelligence Agency (CIA) examined the modified nosecones and concluded that nuclear warheads that might be purchased from China or Pakistan could not be fitted.[57]

See also

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References

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  1. ^ Fisher Jr, Richard (24 July 2007). "New Chinese Missiles _target the Greater Asian Region". International Assessment and Strategy Center - Research. Archived from the original on 9 December 2014.
  2. ^ "Nuclear Warhead Modernization". NTI. 2007. Archived from the original on 2011-06-05.
  3. ^ a b c The Military Power of the People's Republic of China - Annual Report to Congress (PDF) (Report). Office of the Secretary of Defense. 2007. p. 42. Archived from the original (PDF) on 4 July 2007.
  4. ^ Military and Security Developments Involving the People's Republic of China (PDF). Office of the Secretary of Defense (Report). U.S. Department of Defense. 2013. Archived from the original (PDF) on 13 January 2015. Retrieved 3 May 2014. The DF-21D has a range exceeding 1,500 km and is armed with a maneuverable warhead.
  5. ^ a b c "DF21C". SinoDefence. 13 July 2007. Archived from the original on 2008-02-01.
  6. ^ Duncan Lennox, ed., Jane's Strategic Weapon Systems, 51st ed. (Coulsdon, Surrey, U.K.:Jane's Information Group, 2010)
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  8. ^ "Pradun: From Bottle Rockets to Lightning Bolts, p.12". Archived from the original on March 4, 2016.
  9. ^ a b c Kristensen, Hans M. (September 28, 2010). "DF-21C Missile Deploys to Central China". fas.org. Federation of American Scientists. Retrieved 27 November 2013.
  10. ^ "DF-21 (Dong Feng-21 / CSS-5)". Missile Threat.
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  12. ^ a b Ballistic and Cruise Missile Threat (PDF). National Air and Space Intelligence Center (Report). Air Force Intelligence, Surveillance and Reconnaissance Agency. April 2009. NASIC-1031-0985-09. Retrieved 20 February 2013.
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  14. ^ PLAN ASBM development, informationdissemination.net, March 28, 2009.
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  16. ^ Sean O'Connor (11 November 2008). "IMINT & Analysis". geimint.blogspot.com.
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  28. ^ "China's anti-ship missile is nearly operational". Asahi Shimbin. August 26, 2020. Archived from the original on August 27, 2010.
  29. ^ "China Testing Anti-Ship Ballistic Missile (ASBM); U.S. Preparing Accordingly–Updated With Latest Analysis & Sources". andrewerickson.com. December 25, 2010.
  30. ^ "China Naval Modernization: Implications for U.S. Navy Capabilities—Background and Issues for Congress" (PDF).
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  34. ^ "Projects: Standard Missile-6". Naval Technology. Retrieved August 4, 2021.
  35. ^ Electronic Countermeasures maybe only way to counter Chinese DF-21D Ballistic Missile - Navyrecognition.com, 14 December 2013
  36. ^ Erikson, Andrew S.; Yang, David D. (2009). "On the Verge of a Game-Changer". Proceedings Magazine. 135 (5). United States Naval Institute. Retrieved 3 February 2011.
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  42. ^ "Janes | Latest defence and security news". Janes.com.
  43. ^ WORLD TV (3 September 2015). "CHINA SHOWS OFF ITS MILITARY POWER ON V-DAY 70TH PARADE; Strategic Strikes Module Displays MISSILES". Archived from the original on 2016-03-13 – via YouTube.
  44. ^ a b Huang, Kristin (26 August 2020). "Chinese military fires 'aircraft-carrier killer' missile into South China Sea in 'warning to the United States'". South China Morning Post. Archived from the original on 26 August 2020. Retrieved 26 August 2020. The move came one day after China said a US U-2 spy plane entered a no-fly zone without permission during a Chinese live-fire naval drill in the Bohai Sea off its north coast.
  45. ^ a b c "U.S., China trade jibes as military tensions worsen". Reuters. August 27, 2020.
  46. ^ a b c "China fires missiles into South China Sea as U.S. sanctions Beijing". The Japan Times. The Japan Times. Aug 27, 2020.
  47. ^ "U.S. _targets Chinese individuals, companies amid South China Sea dispute". Reuters. Reuters. Aug 26, 2020. A U.S. defense official, speaking on the condition of anonymity, told Reuters that on Wednesday China launched four medium-range ballistic missiles that hit the South China Sea between Hainan Island and the Paracel Islands.
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  50. ^ Hsiao-Huang Shu*. "China's Missile Defense Capability" (PDF). Taiwan Defense Research Institute.
  51. ^ Weeden, Brian. "2007 Chinese Anti-Satellite Test Fact Sheet" (PDF). Secure World Foundation.
  52. ^ a b Newdick, Thomas (1 May 2024). "China's H-6K Bomber Seen Firing Air-Launched Ballistic Missile For First Time". The War Zone.
  53. ^ a b c Nouwen, Veerle; Wright, Timothy; Graham, Euan; Herzinger, Blake (January 2024). Long-range Strike Capabilities in the Asia-Pacific: Implications for Regional Stability (Report). The International Institute for Strategic Studies. p. 12.
  54. ^ a b Panda, Ankit (10 April 2018). "Revealed: China's Nuclear-Capable Air-Launched Ballistic Missile". The Diplomat.
  55. ^ The International Institute for Strategic Studies (13 February 2024). The Military Balance 2024. London: Routledge. p. 384. ISBN 978-1-032-78004-7.
  56. ^ "Exclusive: CIA Helped Saudis in Secret Chinese Missile Deal". Newsweek. 22 April 2014. Retrieved 2 June 2024.
  57. ^ Fitzpatrick, Mark (27 August 2021). "Saudi Arabia's ballistic-missile programme: an overview". International Institute for Strategic Studies. Retrieved 2 June 2024.
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Preceded by DF-21
1999- 		Succeeded by
Retrieved from "https://en.wikipedia.org/w/index.php?title=DF-21&oldid=1259912751"
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