K-4 (missile): Difference between revisions

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{{Use dmy dates|date=November 2019}}
{{short description|Indian submarine-launched missile}}
{{short description|Indian submarine-launched missile}}
{{Use dmy dates|date=November 2022}}
{{Infobox weapon
{{Infobox weapon
| is_missile = yes
| is_missile = yes
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| wingspan =  
| wingspan =  
| speed =  
| speed =  
| vehicle_range = {{convert|3500|km|mi|abbr=on}}<ref name="The New Indian Express">{{cite news |title=K-4 Missile Set for 'Secret' Test |url=http://www.newindianexpress.com/states/odisha/K-4-Missile-Set-for-Secret-Test/2016/03/04/article3309150.ece |publisher=THE NEW INDIAN EXPRESS |date=4 March 2016 |access-date=4 March 2016}}</ref><ref name="thin27j">{{cite news|title=India successfully test-fires underwater missile|url=http://www.thehindu.com/news/national/india-successfully-testfires-underwater-missile/article4350553.ece?homepage=true|access-date=27 January 2013|newspaper=The Hindu|date=27 January 2013}}</ref>
| vehicle_range = {{convert|3500|km|mi|abbr=on}}<ref name="The New Indian Express">{{cite news |title=K-4 Missile Set for 'Secret' Test |url=http://www.newindianexpress.com/states/odisha/K-4-Missile-Set-for-Secret-Test/2016/03/04/article3309150.ece |publisher=THE NEW INDIAN EXPRESS |date=4 March 2016 |access-date=4 March 2022}}</ref><ref name="thin27j">{{cite news|title=India successfully test-fires underwater missile|url=http://www.thehindu.com/news/national/india-successfully-testfires-underwater-missile/article4350553.ece?homepage=true|access-date=27 January 2013|newspaper=The Hindu|date=27 January 2022}}</ref>
| ceiling =  
| ceiling =  
| altitude =  
| altitude =  
| filling = [[Strategic nuclear weapon]]
| filling = [[Strategic nuclear weapon]]
| filling weight = {{convert|2500|kg|lb|lk=out|abbr=on}}<ref>[http://rusnavy.com/news/othernavies/index.php?ELEMENT_ID=11204&print=Y India to test a submarine-based ballistic missile]</ref>
| filling weight = {{convert|2500|kg|lb|lk=out|abbr=on}}<ref>{{Cite web|url=http://rusnavy.com/news/othernavies/index.php?ELEMENT_ID=11204&print=Y|title=India to test a submarine-based ballistic missile|website=rusnavy.com}}</ref>
| guidance = '''Mid-course:''' [[Inertial navigation system]] with [[GPS]]/[[NavIC]] [[satellite guidance]], <br/>'''Terminal:''' [[Terrain contour matching]]<ref>{{cite web |last1=CSIS |title=Sagarika/Shaurya |url=https://missilethreat.csis.org/missile/sagarika-shaurya/ |website=Missile Threat |publisher=CSIS |access-date=28 January 2020}}</ref>
| guidance = '''Mid-course:''' [[Inertial navigation system]] with [[GPS]]/[[NavIC]] [[satellite guidance]], <br />'''Terminal:''' [[Terrain contour matching]]<ref>{{cite web |last1=CSIS |title=Sagarika/Shaurya |url=https://missilethreat.csis.org/missile/sagarika-shaurya/ |website=Missile Threat |publisher=CSIS |access-date=28 January 2022}}</ref>
| detonation =  
| detonation =  
| accuracy =  
| accuracy =  
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'''K-4''' is a nuclear capable [[Intermediate-range ballistic missile|Intermediate-range]] [[submarine-launched ballistic missile]] developed by the [[Defence Research and Development Organisation]] of [[Government of India|India]] to arm the [[Arihant-class submarine]]s.<ref>{{Cite web|url=https://thediplomat.com/2014/05/india-inches-closer-to-credible-nuclear-triad-with-k-4-slbm-test/|title=India Inches Closer to Credible Nuclear Triad With K-4 SLBM Test|last=Diplomat|first=Ankit Panda, The|website=The Diplomat|access-date=26 March 2016}}</ref> The missile has a maximum range of about 3,500&nbsp;km.<ref name="thin27j">{{cite news|title=India successfully test-fires underwater missile|url=http://www.thehindu.com/news/national/india-successfully-testfires-underwater-missile/article4350553.ece?homepage=true|access-date=27 January 2013|newspaper=The Hindu|date=27 January 2013}}</ref><ref>http://www.nasic.af.mil/LinkClick.aspx?fileticket=F2VLcKSmCTE%3d&portalid=19</ref>
'''K-4''' is a nuclear capable [[Intermediate-range ballistic missile|Intermediate-range]] [[submarine-launched ballistic missile]] developed by the [[Defence Research and Development Organisation]] of [[Government of India|India]] to arm the [[Arihant-class submarine]]s.<ref>{{Cite web|url=https://thediplomat.com/2014/05/india-inches-closer-to-credible-nuclear-triad-with-k-4-slbm-test/|title=India Inches Closer to Credible Nuclear Triad With K-4 SLBM Test|last=Diplomat|first=Ankit Panda, The|website=The Diplomat|access-date=26 March 2022}}</ref> The missile has a maximum range of about 3,500&nbsp;km.<ref name="thin27j"/><ref>http://www.nasic.af.mil/LinkClick.aspx?fileticket=F2VLcKSmCTE%3d&portalid=19 {{Bare URL PDF|date=March 2022}}</ref>


==Development==
==Development==
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| video1 = [https://www.youtube.com/watch?v=A_feco6vn7E Video of K-4 missile launch]
| video1 = [https://www.youtube.com/watch?v=A_feco6vn7E Video of K-4 missile launch]
}}
}}
The K-4 is a [[submarine-launched ballistic missile]] which is composed of two stages.<ref name="9Mar2016">{{Cite web|url=https://www.newindianexpress.com/nation/2016/mar/09/EXPRESS-EXCLUSIVE-India-Test-Fires-Nuke-Capable-SLBM-K-4-Secretly-901404.html|title=India Test Fires Nuke Capable SLBM K-4 Secretly|date=9 March 2016|website=[[The New Indian Express]]|access-date=2020-01-29}}</ref> The missile is reported to be {{convert|12|m}} long with a diameter of {{convert|1.3|m}} and weighs nearly {{convert|17|tonne}}. It can carry a warhead weighing up to {{convert|2|tonne}} and is powered [[Solid-fuel rocket|solid rocket propellant]]. The DRDO stated that the aim of the missile was to achieve a high accuracy.<ref name="ie_hr">{{Cite web|url=http://www.newindianexpress.com/states/odisha/2013/dec/10/Longest-Range-Ballistic-Missile-All-Set-for-Undersea-Launch-548253.html|title=Longest Range Ballistic Missile All Set for Undersea Launch|date=10 December 2013|website=The New Indian Express|access-date=19 August 2019}}</ref> As a countermeasure against [[Anti-ballistic missile|ballistic missile defence]] systems, the K4 can perform three-dimensional maneuvers.<ref name="finaltest" />
The K-4 is a [[submarine-launched ballistic missile]] which is composed of two stages.<ref name="9Mar2016">{{Cite web|url=https://www.newindianexpress.com/nation/2016/mar/09/EXPRESS-EXCLUSIVE-India-Test-Fires-Nuke-Capable-SLBM-K-4-Secretly-901404.html|title=India Test Fires Nuke Capable SLBM K-4 Secretly|date=9 March 2016|website=[[The New Indian Express]]|access-date=2020-01-29}}</ref> The missile is reported to be {{convert|12|m}} long with a diameter of {{convert|1.3|m}} and weighs nearly {{convert|17|tonne}}. It can carry a warhead weighing up to {{convert|2|tonne}} and is powered [[Solid-fuel rocket|solid rocket propellant]]. The DRDO stated that the aim of the missile was to achieve a high accuracy.<ref name="ie_hr">{{Cite web|url=http://www.newindianexpress.com/states/odisha/2013/dec/10/Longest-Range-Ballistic-Missile-All-Set-for-Undersea-Launch-548253.html|title=Longest Range Ballistic Missile All Set for Undersea Launch|date=10 December 2013|website=The New Indian Express|access-date=19 August 2022}}</ref> As a countermeasure against [[Anti-ballistic missile|ballistic missile defence]] systems, the K4 can perform three-dimensional maneuvers.<ref name="finaltest" />


==Testing==
==Testing==
The developmental testing of K-4 started in January 2010, when the missile successfully ejected from a pontoon submerged 50 metres below the surface of water and breached the surface.<ref>{{Cite web|url=https://www.indiatoday.in/magazine/the-big-story/story/20101129-the-secret-k-missile-family-744797-2010-11-20|title=The secret 'K' missile family|last=Unnithan|first=Sandeep|date=20 November 2010|website=[[India Today]]|language=en|url-status=live|archive-url=https://web.archive.org/web/20180614045029/https://www.indiatoday.in/magazine/the-big-story/story/20101129-the-secret-k-missile-family-744797-2010-11-20|archive-date=14 June 2018|access-date=17 September 2019}}</ref> The missile was originally scheduled to be initially tested in September 2013 from a [[Pontoon (boat)|pontoon]] submerged 50 feet underwater, but the test was delayed due to unspecified issues.<ref name="ie_hr" /><ref>{{cite news|title=India's K-4 SLBM awaits first launch|url=http://www.janes.com/article/26334/india-s-k-4-slbm-awaits-first-launch|access-date=10 December 2013|newspaper=Jane's|date=27 August 2013}}</ref> In the event, the first test was carried out on 24 March 2014 from a depth of 30 metres. The test was successful and the missile was tested to a range of 3,000&nbsp;km.  The launch took place from a pontoon submerged more than 30 metres deep in the sea off the [[Visakhapatnam]] coast. After a powerful gas generator ejected it from the pontoon submerged in the [[Bay of Bengal]], the K-4 missile rose into the air, took a turn towards the designated target, sped across 3,000&nbsp;km in the sky and dropped into the [[Indian Ocean]].<ref>{{cite news | first1= Ankit | last1= Panda| url=https://thediplomat.com/2014/05/india-inches-closer-to-credible-nuclear-triad-with-k-4-slbm-test/ | title=India Inches Closer to Credible Nuclear Triad With K-4 SLBM Test| date=13 May 2014 | work=TheDiplomat }}</ref>
The developmental testing of K-4 started in January 2010, when the missile successfully ejected from a pontoon submerged 50 metres below the surface of water and breached the surface.<ref>{{Cite web|url=https://www.indiatoday.in/magazine/the-big-story/story/20101129-the-secret-k-missile-family-744797-2010-11-20|title=The secret 'K' missile family|last=Unnithan|first=Sandeep|date=20 November 2010|website=[[India Today]]|language=en|url-status=live|archive-url=https://web.archive.org/web/20180614045029/https://www.indiatoday.in/magazine/the-big-story/story/20101129-the-secret-k-missile-family-744797-2010-11-20|archive-date=14 June 2018|access-date=17 September 2022}}</ref> The missile was originally scheduled to be initially tested in September 2013 from a [[Pontoon (boat)|pontoon]] submerged 50 feet underwater, but the test was delayed due to unspecified issues.<ref name="ie_hr" /><ref>{{cite news|title=India's K-4 SLBM awaits first launch|url=http://www.janes.com/article/26334/india-s-k-4-slbm-awaits-first-launch|access-date=10 December 2013|newspaper=Jane's|date=27 August 2022}}</ref> In the event, the first test was carried out on 24 March 2014 from a depth of 30 metres. The test was successful and the missile was tested to a range of 3,000&nbsp;km.  The launch took place from a pontoon submerged more than 30 metres deep in the sea off the [[Visakhapatnam]] coast. After a powerful gas generator ejected it from the pontoon submerged in the [[Bay of Bengal]], the K-4 missile rose into the air, took a turn towards the designated target, sped across 3,000&nbsp;km in the sky and dropped into the [[Indian Ocean]].<ref>{{cite news | first1= Ankit | last1= Panda| url=https://thediplomat.com/2014/05/india-inches-closer-to-credible-nuclear-triad-with-k-4-slbm-test/ | title=India Inches Closer to Credible Nuclear Triad With K-4 SLBM Test| date=13 May 2014 | work=TheDiplomat }}</ref>


It is reported that on 7 March 2016<ref name=":0">{{Cite web|url=http://www.newindianexpress.com/nation/EXPRESS-EXCLUSIVE-Maiden-Test-of-Undersea-K-4-Missile-From-Arihant-Submarine/2016/04/09/article3370608.ece|title=EXPRESS EXCLUSIVE: Maiden Test of Undersea K-4 Missile From Arihant Submarine|website=The New Indian Express|access-date=12 April 2016}}</ref> the K-4 was successfully tested from a submerged platform in the Bay of Bengal.<ref>{{Cite web|url=http://www.newindianexpress.com/states/odisha/K-4-Missile-Test-A-Roaring-Success/2016/03/16/article3329130.ece|title=K-4 Missile Test A Roaring Success|website=The New Indian Express|access-date=27 March 2016}}</ref>
It is reported that on 7 March 2016<ref name=":0">{{Cite web|url=http://www.newindianexpress.com/nation/EXPRESS-EXCLUSIVE-Maiden-Test-of-Undersea-K-4-Missile-From-Arihant-Submarine/2016/04/09/article3370608.ece|title=EXPRESS EXCLUSIVE: Maiden Test of Undersea K-4 Missile From Arihant Submarine|website=The New Indian Express|access-date=12 April 2022}}</ref> the K-4 was successfully tested from a submerged platform in the Bay of Bengal.<ref>{{Cite web|url=http://www.newindianexpress.com/states/odisha/K-4-Missile-Test-A-Roaring-Success/2016/03/16/article3329130.ece|title=K-4 Missile Test A Roaring Success|website=The New Indian Express|access-date=27 March 2022}}</ref>


In April 2016, it was reported that the missile was successfully tested on 31 March 2016 from [[INS Arihant]], 45 nautical miles away from Vishakhapatnam coast in [[Andhra Pradesh]]. The missile with a dummy payload was launched from the submarine in full operational configuration. The trial was carried out with the support of the personnel of [[Strategic Forces Command]] (SFC) and the DRDO provided all the logistics. The missile was fired from 20-metre deep and covered more than 700&nbsp;km before zeroing on the target with high accuracy reaching close to zero error.<ref name=":0" /><ref>{{Cite web|url=http://indiatoday.intoday.in/story/india-successfully-tests-long-range-nuclear-missile-developed-secretly/1/641609.html|title=India tests most ambitious nuclear missile|website=indiatoday.intoday.in|access-date=13 April 2016}}</ref><ref>{{Cite web|url=http://www.firstpost.com/india/nuclear-capable-k-4-ballistic-missile-tested-from-ins-arihant-2727516.html|title=Nuclear-capable K-4 ballistic missile tested from INS Arihant - Firstpost|website=Firstpost|date=13 April 2016|language=en-US|access-date=13 April 2016}}</ref><ref>{{Cite web|url=https://thediplomat.com/2016/04/india-successfully-tests-intermediate-range-nuclear-capable-submarine-launched-ballistic-missile/|title=India Successfully Tests Intermediate-Range Nuclear-Capable Submarine-Launched Ballistic Missile|last=Diplomat|first=Ankit Panda, The|website=The Diplomat|access-date=13 April 2016}}</ref><ref>{{Cite web|url=http://www.ibtimes.co.in/drdos-nuclear-capable-k-4-underwater-missile-test-fired-again-this-time-ins-arihant-report-673978|title=DRDO's nuclear capable K-4 underwater missile test-fired again, this time from INS Arihant: Report|website=International Business Times, India Edition|date=9 April 2016|language=en|access-date=13 April 2016}}</ref>
In April 2016, it was reported that the missile was successfully tested on 31 March 2016 from [[INS Arihant]], 45 nautical miles away from Vishakhapatnam coast in [[Andhra Pradesh]]. The missile with a dummy payload was launched from the submarine in full operational configuration. The trial was carried out with the support of the personnel of [[Strategic Forces Command]] (SFC) and the DRDO provided all the logistics. The missile was fired from 20-metre deep and covered more than 700&nbsp;km before zeroing on the target with high accuracy reaching close to zero error.<ref name=":0" /><ref>{{Cite web|url=http://indiatoday.intoday.in/story/india-successfully-tests-long-range-nuclear-missile-developed-secretly/1/641609.html|title=India tests most ambitious nuclear missile|website=indiatoday.intoday.in|access-date=13 April 2022}}</ref><ref>{{Cite web|url=http://www.firstpost.com/india/nuclear-capable-k-4-ballistic-missile-tested-from-ins-arihant-2727516.html|title=Nuclear-capable K-4 ballistic missile tested from INS Arihant - Firstpost|website=Firstpost|date=13 April 2016|language=en-US|access-date=13 April 2022}}</ref><ref>{{Cite web|url=https://thediplomat.com/2016/04/india-successfully-tests-intermediate-range-nuclear-capable-submarine-launched-ballistic-missile/|title=India Successfully Tests Intermediate-Range Nuclear-Capable Submarine-Launched Ballistic Missile|last=Diplomat|first=Ankit Panda, The|website=The Diplomat|access-date=13 April 2022}}</ref><ref>{{Cite web|url=http://www.ibtimes.co.in/drdos-nuclear-capable-k-4-underwater-missile-test-fired-again-this-time-ins-arihant-report-673978|title=DRDO's nuclear capable K-4 underwater missile test-fired again, this time from INS Arihant: Report|website=International Business Times, India Edition|date=9 April 2016|language=en|access-date=13 April 2022}}</ref>


On 17 December 2017, an attempt to launch K-4 missile ended in a failure.<ref name="print-failure">{{Cite web|url=https://theprint.in/report/setback-for-indian-missile-programme-two-failures-in-a-week-submarine-version-stuck/24671/|title=Setback for Indian missile programme: Two failures in a week, submarine version stuck|last=Pubby|first=Manu|date=24 December 2017|website=The Print|access-date=19 August 2019}}</ref><ref>{{Cite news|last=Rout|first=Hemant Kumar|url=http://www.newindianexpress.com/nation/2018/jan/03/drdo-lines-up-crucial-trials-of-agni-v-and-k-4-missiles-1742984.html|title=DRDO lines up crucial trials of Agni-V and K-4 missiles|work=The New Indian Express|date=3 January 2018}}</ref> The failure was attributed to a discharged battery.<ref name="print-failure"/>
On 17 December 2017, an attempt to launch K-4 missile ended in a failure.<ref name="print-failure">{{Cite web|url=https://theprint.in/report/setback-for-indian-missile-programme-two-failures-in-a-week-submarine-version-stuck/24671/|title=Setback for Indian missile programme: Two failures in a week, submarine version stuck|last=Pubby|first=Manu|date=24 December 2017|website=The Print|access-date=19 August 2022}}</ref><ref>{{Cite news|last=Rout|first=Hemant Kumar|url=http://www.newindianexpress.com/nation/2018/jan/03/drdo-lines-up-crucial-trials-of-agni-v-and-k-4-missiles-1742984.html|title=DRDO lines up crucial trials of Agni-V and K-4 missiles|work=The New Indian Express|date=3 January 2022}}</ref> The failure was attributed to a discharged battery.<ref name="print-failure"/>


A test of the K-4 was planned in October 2019 but got postponed.<ref name=":1">{{Cite news|url=https://economictimes.indiatimes.com/news/defence/india-to-test-fire-3500-km-range-k-4-nuclear-missile/articleshow/71934973.cms|title=India to test-fire 3,500 km range K-4 nuclear missile|date=2019-11-06|work=[[Asian News International]]|access-date=2019-11-06|via=[[The Economic Times]]}}</ref><ref>{{Cite web|url=https://www.drdo.gov.in/sites/default/files/drdo-news-documents/DRDO_News_25_Oct_2019.pdf|title=Submarine launched ballistic missile (SLBM) K-4 test imminent|date=25 October 2019|website=DefenceNews|via=[[Defence Research and Development Organisation]]|url-status=live|archive-url=https://web.archive.org/web/20191101011915/https://www.drdo.gov.in/sites/default/files/drdo-news-documents/DRDO_News_25_Oct_2019.pdf|archive-date=1 November 2019|access-date=1 November 2019}}</ref> A test of the K-4 missile was expected to be held on 8 November 2019,<ref>{{Cite web|url=http://www.newindianexpress.com/states/odisha/2019/nov/04/four-nuclear-capable-missiles-lined-up-for-test-this-month-2056717.html|title=Four nuclear capable missiles lined up for test this month|date=4 November 2019|website=[[The New Indian Express]]|access-date=2019-11-04}}</ref><ref name=":1" /> but got postponed due to unfavorable weather conditions caused by the [[cyclone]] Bulbul.<ref name=":2">{{Cite news|url=https://economictimes.indiatimes.com/news/defence/critical-test-for-submarine-launched-nuclear-missile-this-weekend/articleshow/72286330.cms|title=Critical test for submarine-launched nuclear missile this weekend|last=Pubby|first=Manu|date=2019-11-29|work=[[The Economic Times]]|access-date=2019-11-29}}</ref> A test of the missile was expected to be conducted in December 2019.<ref>{{Cite news|url=https://economictimes.indiatimes.com/news/defence/submarine-launched-k4-missile-test-now-likely-in-mid-december/articleshow/72305389.cms|title=Submarine launched K4 missile test now likely in mid December|last=Pubby|first=Manu|date=2019-11-30|work=The Economic Times|access-date=2019-11-30}}</ref>
A test of the K-4 was planned in October 2019 but got postponed.<ref name=":1">{{Cite news|url=https://economictimes.indiatimes.com/news/defence/india-to-test-fire-3500-km-range-k-4-nuclear-missile/articleshow/71934973.cms|title=India to test-fire 3,500 km range K-4 nuclear missile|date=2019-11-06|work=[[Asian News International]]|access-date=2019-11-06|via=[[The Economic Times]]}}</ref><ref>{{Cite web|url=https://www.drdo.gov.in/sites/default/files/drdo-news-documents/DRDO_News_25_Oct_2019.pdf|title=Submarine launched ballistic missile (SLBM) K-4 test imminent|date=25 October 2019|website=DefenceNews|via=[[Defence Research and Development Organisation]]|url-status=live|archive-url=https://web.archive.org/web/20191101011915/https://www.drdo.gov.in/sites/default/files/drdo-news-documents/DRDO_News_25_Oct_2019.pdf|archive-date=1 November 2019|access-date=1 November 2022}}</ref> A test of the K-4 missile was expected to be held on 8 November 2019,<ref>{{Cite web|url=http://www.newindianexpress.com/states/odisha/2019/nov/04/four-nuclear-capable-missiles-lined-up-for-test-this-month-2056717.html|title=Four nuclear capable missiles lined up for test this month|date=4 November 2019|website=[[The New Indian Express]]|access-date=2019-11-04}}</ref><ref name=":1" /> but got postponed due to unfavorable weather conditions caused by the [[cyclone]] Bulbul.<ref name=":2">{{Cite news|url=https://economictimes.indiatimes.com/news/defence/critical-test-for-submarine-launched-nuclear-missile-this-weekend/articleshow/72286330.cms|title=Critical test for submarine-launched nuclear missile this weekend|last=Pubby|first=Manu|date=2019-11-29|work=[[The Economic Times]]|access-date=2019-11-29}}</ref> A test of the missile was expected to be conducted in December 2019.<ref>{{Cite news|url=https://economictimes.indiatimes.com/news/defence/submarine-launched-k4-missile-test-now-likely-in-mid-december/articleshow/72305389.cms|title=Submarine launched K4 missile test now likely in mid December|last=Pubby|first=Manu|date=2019-11-30|work=The Economic Times|access-date=2019-11-30}}</ref>


On 19 January 2020, K-4 was successfully tested from a submerged platform located in the coastal waters of [[Andhra Pradesh]].<ref>{{Cite news|url=https://www.thehindu.com/news/national/india-successfully-test-fires-3500-km-k-4-slbm/article30601739.ece|title=India successfully test-fires 3,500-km range submarine-launched ballistic missile K-4|last=Peri|first=Dinakar|date=2020-01-19|work=The Hindu|access-date=2020-01-19|language=en-IN|issn=0971-751X}}</ref><ref>{{Cite web|url=https://www.aninews.in/news/world/asia/india-successfully-test-fires-nuclear-capable-k-4-ballistic-missile-off-andhra-pradesh-coast20200119194506/|title=India successfully test-fires nuclear-capable K-4 ballistic missile off Andhra Pradesh coast|date=19 January 2020|website=[[Asian News International]]|language=en|access-date=2020-01-19}}</ref> This test was undertaken in full operational configuration during which the missile traversed a distance of over 3,500 [[km]] in approximately 21 minutes, achieving a near-zero [[Circular error probable|circular error probability]].<ref name="tnieJan2020">{{Cite web|url=https://www.newindianexpress.com/states/odisha/2020/jan/20/india-successfully-test-fires-3500-km-nuclear-capable-missile-k-4-2091838.html|title=India successfully test-fires 3,500 km nuclear-capable missile K-4|date=20 January 2020|website=[[The New Indian Express]]|access-date=2020-01-20}}</ref>  
On 19 January 2020, K-4 was successfully tested from a submerged platform located in the coastal waters of [[Andhra Pradesh]].<ref>{{Cite news|url=https://www.thehindu.com/news/national/india-successfully-test-fires-3500-km-k-4-slbm/article30601739.ece|title=India successfully test-fires 3,500-km range submarine-launched ballistic missile K-4|last=Peri|first=Dinakar|date=2020-01-19|work=The Hindu|access-date=2020-01-19|language=en-IN|issn=0971-751X}}</ref><ref>{{Cite web|url=https://www.aninews.in/news/world/asia/india-successfully-test-fires-nuclear-capable-k-4-ballistic-missile-off-andhra-pradesh-coast20200119194506/|title=India successfully test-fires nuclear-capable K-4 ballistic missile off Andhra Pradesh coast|date=19 January 2020|website=[[Asian News International]]|language=en|access-date=2020-01-19}}</ref> This test was undertaken in full operational configuration during which the missile traversed a distance of over 3,500 [[km]] in approximately 21 minutes, achieving a near-zero [[Circular error probable|circular error probability]].<ref name="tnieJan2020">{{Cite web|url=https://www.newindianexpress.com/states/odisha/2020/jan/20/india-successfully-test-fires-3500-km-nuclear-capable-missile-k-4-2091838.html|title=India successfully test-fires 3,500 km nuclear-capable missile K-4|date=20 January 2020|website=[[The New Indian Express]]|access-date=2020-01-20}}</ref>


Another test was successfully carried out on 24 January 2020.<ref>{{Cite news|url=https://economictimes.indiatimes.com/news/defence/india-successfully-test-fires-k-4-submarine-launched-nuclear-capable-missile/articleshow/73591070.cms|title=India successfully test-fires K-4 submarine-launched nuclear capable missile|date=2020-01-24|work=[[Press Trust of India]]|via=[[The Economic Times]]|access-date=2020-01-25}}</ref> This was the final developmental test of K-4 and the missile was ready to enter serial production.<ref name="finaltest">{{Cite web|url=https://www.newindianexpress.com/states/odisha/2020/jan/25/sub-launched-k-4-ready-for-induction-2094389.html|title=Sub-launched K-4 ready for induction|date=25 January 2020|website=[[The New Indian Express]]|access-date=2020-01-25}}</ref><ref>{{Cite web|url=https://timesofindia.indiatimes.com/india/india-successfully-test-fires-k-4-submarine-launched-missile/articleshow/73589861.cms|title=Arihant's N-capable missile 'ready to roll'|date=24 January 2020|website=[[The Times of India]]|language=en|access-date=2020-01-25}}</ref>
Another test was successfully carried out on 24 January 2020.<ref>{{Cite news|url=https://economictimes.indiatimes.com/news/defence/india-successfully-test-fires-k-4-submarine-launched-nuclear-capable-missile/articleshow/73591070.cms|title=India successfully test-fires K-4 submarine-launched nuclear capable missile|date=2020-01-24|work=[[Press Trust of India]]|via=[[The Economic Times]]|access-date=2020-01-25}}</ref> This was the final developmental test of K-4 and the missile was ready to enter serial production.<ref name="finaltest">{{Cite web|url=https://www.newindianexpress.com/states/odisha/2020/jan/25/sub-launched-k-4-ready-for-induction-2094389.html|title=Sub-launched K-4 ready for induction|date=25 January 2020|website=[[The New Indian Express]]|access-date=2020-01-25}}</ref><ref>{{Cite web|url=https://timesofindia.indiatimes.com/india/india-successfully-test-fires-k-4-submarine-launched-missile/articleshow/73589861.cms|title=Arihant's N-capable missile 'ready to roll'|date=24 January 2020|website=[[The Times of India]]|language=en|access-date=2020-01-25}}</ref>


==See also==
==See also==
{{Portal|India|Rocketry|Nuclear technology}}
*[[K Missile family]]
*[[K Missile family]]
*[[Arihant class submarine]]
*[[Arihant class submarine]]

Revision as of 22:38, 4 November 2022

K-4
TypeIntermediate-range SLBM
Place of originIndia
Service history
In service2020s[1]
Used by Indian Navy
Production history
DesignerDefence Research and Development Organisation
ManufacturerBharat Dynamics Limited
Specifications
Mass17 t (19 short tons)[2]
Length12 m (39 ft)[2]
Diameter1.3 m (4.3 ft)[2]
WarheadStrategic nuclear weapon
EngineTwo stage rocket motor[3]
PropellantSolid fuel[3]
Operational
range
3,500 km (2,200 mi)[4][5]
Guidance
system
Mid-course: Inertial navigation system with GPS/NavIC satellite guidance,
Terminal: Terrain contour matching[6]
Launch
platform
Arihant class submarines

K-4 is a nuclear capable Intermediate-range submarine-launched ballistic missile developed by the Defence Research and Development Organisation of India to arm the Arihant-class submarines.[7] The missile has a maximum range of about 3,500 km.[5][8]

Development

The development of the K-4 was undertaken after facing significant difficulties in compacting similarly capable Agni-III to equip INS Arihant which has a limited 17-metre (56 ft) diameter hull. K-4 has range comparable to Agni-III with major length reduction from 17 metres (56 ft) to 12 metres (39 ft). The gas-booster designed for K-4 was successfully tested from a submerged pontoon in 2010.[9]

Agencies responsible

The High Energy Material Research Laboratory (HEMRL) and the Advanced Centre for Energetic Materials (ACEM) of the DRDO have been involved in developing the three motors responsible for propelling the K-4, the systems responsible for separating the stages of K-4, the low-thrust boosters, the gas generator and other components. The launch system of K-4 has been developed by the Naval Systems Group of the Research and Development Establishment (Engineers).[10]

Description

External video
Video of K-4 missile launch

The K-4 is a submarine-launched ballistic missile which is composed of two stages.[3] The missile is reported to be 12 metres (39 ft) long with a diameter of 1.3 metres (4 ft 3 in) and weighs nearly 17 tonnes (19 tons). It can carry a warhead weighing up to 2 tonnes (2.2 tons) and is powered solid rocket propellant. The DRDO stated that the aim of the missile was to achieve a high accuracy.[2] As a countermeasure against ballistic missile defence systems, the K4 can perform three-dimensional maneuvers.[1]

Testing

The developmental testing of K-4 started in January 2010, when the missile successfully ejected from a pontoon submerged 50 metres below the surface of water and breached the surface.[11] The missile was originally scheduled to be initially tested in September 2013 from a pontoon submerged 50 feet underwater, but the test was delayed due to unspecified issues.[2][12] In the event, the first test was carried out on 24 March 2014 from a depth of 30 metres. The test was successful and the missile was tested to a range of 3,000 km. The launch took place from a pontoon submerged more than 30 metres deep in the sea off the Visakhapatnam coast. After a powerful gas generator ejected it from the pontoon submerged in the Bay of Bengal, the K-4 missile rose into the air, took a turn towards the designated target, sped across 3,000 km in the sky and dropped into the Indian Ocean.[13]

It is reported that on 7 March 2016[14] the K-4 was successfully tested from a submerged platform in the Bay of Bengal.[15]

In April 2016, it was reported that the missile was successfully tested on 31 March 2016 from INS Arihant, 45 nautical miles away from Vishakhapatnam coast in Andhra Pradesh. The missile with a dummy payload was launched from the submarine in full operational configuration. The trial was carried out with the support of the personnel of Strategic Forces Command (SFC) and the DRDO provided all the logistics. The missile was fired from 20-metre deep and covered more than 700 km before zeroing on the target with high accuracy reaching close to zero error.[14][16][17][18][19]

On 17 December 2017, an attempt to launch K-4 missile ended in a failure.[20][21] The failure was attributed to a discharged battery.[20]

A test of the K-4 was planned in October 2019 but got postponed.[22][23] A test of the K-4 missile was expected to be held on 8 November 2019,[24][22] but got postponed due to unfavorable weather conditions caused by the cyclone Bulbul.[25] A test of the missile was expected to be conducted in December 2019.[26]

On 19 January 2020, K-4 was successfully tested from a submerged platform located in the coastal waters of Andhra Pradesh.[27][28] This test was undertaken in full operational configuration during which the missile traversed a distance of over 3,500 km in approximately 21 minutes, achieving a near-zero circular error probability.[29]

Another test was successfully carried out on 24 January 2020.[30] This was the final developmental test of K-4 and the missile was ready to enter serial production.[1][31]

See also

References

  1. ↑ 1.0 1.1 1.2 "Sub-launched K-4 ready for induction". The New Indian Express. 25 January 2020. Retrieved 25 January 2020.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 "Longest Range Ballistic Missile All Set for Undersea Launch". The New Indian Express. 10 December 2013. Retrieved 19 August 2022.
  3. ↑ 3.0 3.1 3.2 "India Test Fires Nuke Capable SLBM K-4 Secretly". The New Indian Express. 9 March 2016. Retrieved 29 January 2020.
  4. ↑ "K-4 Missile Set for 'Secret' Test". THE NEW INDIAN EXPRESS. 4 March 2016. Retrieved 4 March 2022.
  5. ↑ 5.0 5.1 "India successfully test-fires underwater missile". The Hindu. 27 January 2022. Retrieved 27 January 2013.
  6. ↑ CSIS. "Sagarika/Shaurya". Missile Threat. CSIS. Retrieved 28 January 2022.
  7. ↑ Diplomat, Ankit Panda, The. "India Inches Closer to Credible Nuclear Triad With K-4 SLBM Test". The Diplomat. Retrieved 26 March 2022.{{cite web}}: CS1 maint: multiple names: authors list (link)
  8. ↑ http://www.nasic.af.mil/LinkClick.aspx?fileticket=F2VLcKSmCTE%3d&portalid=19 Template:Bare URL PDF
  9. ↑ Subramanian, T. S. (28 January 2011). "DRDO plans another K-15 missile launch". The Hindu. ISSN 0971-751X. Retrieved 19 August 2019.
  10. ↑ "Key components of K-4 missile designed, developed in Pune". The Indian Express. 21 January 2020. Retrieved 25 January 2020.
  11. ↑ Unnithan, Sandeep (20 November 2010). "The secret 'K' missile family". India Today. Archived from the original on 14 June 2018. Retrieved 17 September 2022.
  12. ↑ "India's K-4 SLBM awaits first launch". Jane's. 27 August 2022. Retrieved 10 December 2013.
  13. ↑ Panda, Ankit (13 May 2014). "India Inches Closer to Credible Nuclear Triad With K-4 SLBM Test". TheDiplomat.
  14. ↑ 14.0 14.1 "EXPRESS EXCLUSIVE: Maiden Test of Undersea K-4 Missile From Arihant Submarine". The New Indian Express. Retrieved 12 April 2022.
  15. ↑ "K-4 Missile Test A Roaring Success". The New Indian Express. Retrieved 27 March 2022.
  16. ↑ "India tests most ambitious nuclear missile". indiatoday.intoday.in. Retrieved 13 April 2022.
  17. ↑ "Nuclear-capable K-4 ballistic missile tested from INS Arihant - Firstpost". Firstpost. 13 April 2016. Retrieved 13 April 2022.
  18. ↑ Diplomat, Ankit Panda, The. "India Successfully Tests Intermediate-Range Nuclear-Capable Submarine-Launched Ballistic Missile". The Diplomat. Retrieved 13 April 2022.{{cite web}}: CS1 maint: multiple names: authors list (link)
  19. ↑ "DRDO's nuclear capable K-4 underwater missile test-fired again, this time from INS Arihant: Report". International Business Times, India Edition. 9 April 2016. Retrieved 13 April 2022.
  20. ↑ 20.0 20.1 Pubby, Manu (24 December 2017). "Setback for Indian missile programme: Two failures in a week, submarine version stuck". The Print. Retrieved 19 August 2022.
  21. ↑ Rout, Hemant Kumar (3 January 2022). "DRDO lines up crucial trials of Agni-V and K-4 missiles". The New Indian Express.
  22. ↑ 22.0 22.1 "India to test-fire 3,500 km range K-4 nuclear missile". Asian News International. 6 November 2019. Retrieved 6 November 2019 – via The Economic Times.
  23. ↑ "Submarine launched ballistic missile (SLBM) K-4 test imminent" (PDF). DefenceNews. 25 October 2019. Archived (PDF) from the original on 1 November 2019. Retrieved 1 November 2022 – via Defence Research and Development Organisation.
  24. ↑ "Four nuclear capable missiles lined up for test this month". The New Indian Express. 4 November 2019. Retrieved 4 November 2019.
  25. ↑ Pubby, Manu (29 November 2019). "Critical test for submarine-launched nuclear missile this weekend". The Economic Times. Retrieved 29 November 2019.
  26. ↑ Pubby, Manu (30 November 2019). "Submarine launched K4 missile test now likely in mid December". The Economic Times. Retrieved 30 November 2019.
  27. ↑ Peri, Dinakar (19 January 2020). "India successfully test-fires 3,500-km range submarine-launched ballistic missile K-4". The Hindu. ISSN 0971-751X. Retrieved 19 January 2020.
  28. ↑ "India successfully test-fires nuclear-capable K-4 ballistic missile off Andhra Pradesh coast". Asian News International. 19 January 2020. Retrieved 19 January 2020.
  29. ↑ "India successfully test-fires 3,500 km nuclear-capable missile K-4". The New Indian Express. 20 January 2020. Retrieved 20 January 2020.
  30. ↑ "India successfully test-fires K-4 submarine-launched nuclear capable missile". Press Trust of India. 24 January 2020. Retrieved 25 January 2020 – via The Economic Times.
  31. ↑ "Arihant's N-capable missile 'ready to roll'". The Times of India. 24 January 2020. Retrieved 25 January 2020.
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