{"id":6234,"date":"2026-01-04T14:01:21","date_gmt":"2026-01-04T08:31:21","guid":{"rendered":"https:\/\/vajiramandravi.com\/upsc-exam\/?p=6234"},"modified":"2026-01-05T11:12:43","modified_gmt":"2026-01-05T05:42:43","slug":"agni-missile","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/upsc-exam\/agni-missile\/","title":{"rendered":"Agni Missile, History, Types, Range, Significance, UPSC Notes"},"content":{"rendered":"

The Agni missiles are\u00a0solid-propelled ballistic missiles<\/strong>, ranging from short-range missiles to intercontinental ballistic missiles, with road and rail mobility providing greater chances of survivability during an enemy attack.<\/p>\r\n

The development of the Agni missile series was started in early 1980 as part of the\u00a0Integrated Guided Missile Development Program\u00a0<\/strong>led by former\u00a0President APJ Abdul Kalam<\/strong>. Since then, India has developed many variants of the\u00a0Agni missile series.<\/strong>\u00a0Over the last two decades, India has worked to improve its strategic\u00a0deterrent\u00a0<\/strong>capability by developing a variety of\u00a0ballistic missiles, <\/strong>precision-guided munitions, and related platforms.<\/p>\r\n

Agni Missile Working<\/h2>\r\n

Ballistic missiles are initially propelled by a rocket or series of rockets but then follow an unpowered trajectory that arches upwards before descending to reach their target.<\/p>\r\n

    \r\n\t
  • The missile\u2019s fuel, or\u00a0propellant<\/strong>, is burned in an engine, creating hot exhaust gases, which are funnelled through a\u00a0nozzle<\/strong>\u00a0at the rear of the missile. This action generates thrust at the missile\u2019s base, forcing it upwards in the opposite reaction. To achieve lift-off, the thrust must be greater than the missile\u2019s weight.<\/li>\r\n\t
  • The missile will continue to accelerate until its\u00a0propellant\u00a0<\/strong>runs out, at which point it will have reached its maximum speed and will continue to move at that speed until another force, such as\u00a0gravity\u00a0<\/strong>or\u00a0air resistance,<\/strong>\u00a0acts on it.\r\n\r\n
      \r\n\t
    • The time at which this occurs is referred to as the\u00a0burnout time<\/strong>, and the velocity attained is referred to as the\u00a0burnout velocity.<\/strong><\/li>\r\n\t
    • When a missile runs out of propellant, getting the timing and velocity right is critical to ensuring the payload reaches its target.<\/li>\r\n<\/ul>\r\n<\/li>\r\n\t
    • Ballistic missiles have three stages of flight:<\/strong><\/li>\r\n\t
    • Boost Phase:\u00a0<\/strong>A missile will use up all its propellant during a short period known as the\u00a0boost phase<\/strong>, after which its trajectory is set and cannot be changed. For an ICBM, this period may last only a few minutes.<\/li>\r\n\t
    • Midcourse Phase:\u00a0<\/strong>After the boost phase, the missile stops accelerating and is propelled by its own momentum, entering what is known as the midcourse phase.<\/li>\r\n\t
    • Terminal Phase:\u00a0<\/strong>It begins when the detached warhead(s) reenter the Earth\u2019s atmosphere and ends upon impact or detonation. An\u00a0ICBM\u00a0<\/strong>may coast through space for up to 20 minutes before re-entering the atmosphere for the\u00a0terminal phase<\/strong>\u00a0of its flight path.<\/li>\r\n<\/ul>\r\n

      Development of Agni Missiles<\/h2>\r\n

      The Agni missile was developed as part of India's\u00a0Integrated Guided Missile Development Program (IGMDP) in 1983<\/strong>, which also produced the Prithvi, Nag, Akash, and Trishul missiles. India\u2019s\u00a0Defence Research and Development Organisation (DRDO)<\/strong>originally envisioned a\u00a0two-stage rocket,<\/strong>\u00a0the Agni demonstrator for validating re-entry vehicle technologies.<\/p>\r\n

        \r\n\t
      • The Agni missile was developed by the\u00a0DRDO\u00a0<\/strong>using two existing boosters:\u00a0a solid-fueled first stage<\/strong>\u00a0from\u00a0India's SLV-3<\/strong>\u00a0space launch vehicle and a modified\u00a0Prithvi-I\u00a0<\/strong>body for the missile's upper stage.<\/li>\r\n\t
      • In 1989, India flight tested the Agni demonstrator for the first time.<\/li>\r\n\t
      • The DRDO tested an upgraded Agni demonstrator in 1992, which included a\u00a0manoeuvring re-entry vehicle<\/strong>\u00a0and an open interstage, removing the need for ullage motors between the first and second stages.<\/li>\r\n\t
      • DRDO conducted a third flight of the demonstrator in its upgraded configuration in 1994.<\/li>\r\n\t
      • Following the completion of reentry studies, the DRDO repurposed the Agni demonstrator as a\u00a0single-stage ballistic missile<\/strong>, the Agni-I.<\/li>\r\n<\/ul>\r\n

        Types of Agni Missiles<\/h2>\r\n

        The Agni missile series is the backbone of\u00a0India's nuclear weapon delivery.\u00a0<\/strong>The Agni missile series includes missiles I\u2013V, with the most advanced, Agni-V. In addition to the Agni-V, India currently has the following\u00a0Agni missiles<\/strong>: Agni-I, Agni-II, Agni-III, and Agni-IV and Agni Prime.<\/p>\r\n

        \"agni-5-missile.jpg\"<\/figure>\r\n

        Agni-I Missile<\/h3>\r\n

        Agni-I development began in\u00a01999<\/strong>, and the missile had its first successful test launch in 2003. Since its initial deployment, the\u00a0Agni-I\u00a0<\/strong>has been tested on a regular basis by\u00a0India's Strategic Forces Command.<\/strong><\/p>\r\n

          \r\n\t
        • The nuclear-capable road-mobile missile was first deployed by the\u00a0Indian Army's Strategic Forces Command<\/strong>\u00a0in 2007.<\/li>\r\n\t
        • It is a\u00a0single-stage<\/strong>, solid-fuel missile.<\/li>\r\n\t
        • It is a\u00a0short-range ballistic missile (SRBM)\u00a0<\/strong>with a heavy payload but can travel up to 1200 km with lighter payloads, which makes it a\u00a0medium-range ballistic missile (MRBM).<\/strong><\/li>\r\n\t
        • Range<\/strong>: 700 km- 1200 km<\/li>\r\n\t
        • Powered by a\u00a0solid-propellant booste<\/strong>r based on the Indian Space Research Organisation's (ISRO) SLV-3.<\/li>\r\n\t
        • The Agni-I is designed to be launched from\u00a0rail-based platforms<\/strong>\u00a0or\u00a0road-mobile transporter erector launchers<\/strong>\u00a0(TELs).<\/li>\r\n<\/ul>\r\n

          Agni-II Missile<\/h3>\r\n

          The first test-firing of the\u00a0prototype of the Agni-II missile<\/strong>\u00a0was carried out in 1999. In 2010, the trial of a\u00a0nuclear-capable<\/strong>\u00a0Agni-II ballistic missile was conducted by the\u00a0Special Strategic Command Force<\/strong>\u00a0from the Integrated Test Range (ITR) before it was made operational by the Army.<\/p>\r\n

            \r\n\t
          • Agni-II was developed by\u00a0Advanced Systems Laboratory,<\/strong>\u00a0along with other DRDO laboratories and integrated by\u00a0Bharat Dynamics Limited.<\/strong><\/li>\r\n\t
          • It is a\u00a0surface-to-surface<\/strong>\u00a0medium-range nuclear-capable missile.<\/li>\r\n\t
          • Range: 2000 km<\/strong>\u00a0(can be increased to 3000 km by reducing the payload).<\/li>\r\n\t
          • It is a\u00a0two-stage ballistic missile<\/strong>\u00a0with\u00a0solid fuel<\/strong>.<\/li>\r\n\t
          • Payload:\u00a0<\/strong>1000 kg.<\/li>\r\n\t
          • The missile is equipped with an advanced\u00a0high-accuracy navigation system,<\/strong>\u00a0guided by a novel state-of-the-art command and control system and propelled by a\u00a0solid rocket propellant system<\/strong>.<\/li>\r\n<\/ul>\r\n

            Agni-III Missile<\/h3>\r\n

            The system was first successfully flight-tested in 2007, and since then, it has been successfully tested several times.<\/p>\r\n

              \r\n\t
            • The Agni-III is a\u00a0two-stage, solid-propellant missile\u00a0<\/strong>deployed in rail-mobile mode.<\/li>\r\n\t
            • It is an\u00a0Intermediate Range<\/strong>\u00a0Ballistic Missile.<\/li>\r\n\t
            • Surface-to-surface ballistic missile.<\/li>\r\n\t
            • Range<\/strong>: 3,500 km<\/li>\r\n\t
            • Payload:<\/strong>\u00a01500 kg<\/li>\r\n\t
            • Due to its high range of\u00a0circular error probable(CEP)<\/strong>, the Agni-3 missile is known as one of the world's most accurate strategic ballistic missiles of its range class.<\/li>\r\n<\/ul>\r\n

              Agni-IV Missile<\/h3>\r\n

              Agni-IV is the fourth brilliant result of DRDO work in the Agni series of missiles, previously known as\u00a0Agni II prime.<\/strong>\u00a0Agni-IV was first tested in 2011, from Wheeler Island off the coast of the eastern state of Odisha.<\/p>\r\n

                \r\n\t
              • Agni-4 is an\u00a0intermediate-range ballistic missile<\/strong><\/li>\r\n\t
              • Payload:\u00a0<\/strong>1,000 kg<\/li>\r\n\t
              • Range:\u00a0<\/strong>Up to 4,000 km.<\/li>\r\n\t
              • It is a\u00a0surface-to-surface<\/strong>\u00a0missile.<\/li>\r\n\t
              • It is a\u00a0mobile, two-stage solid-fuel system.<\/strong><\/li>\r\n\t
              • Equipped with\u00a0state-of-the-art Avionic<\/strong>s, the 5th generation onboard computer, and distributed architecture.<\/li>\r\n\t
              • It has the most recent features to correct and guide itself during in-flight disturbances.<\/li>\r\n\t
              • It has a\u00a0circular error probable (CEP)<\/strong>\u00a0of less than 100 meters.\r\n\r\n
                  \r\n\t
                • CEP is a measure of a\u00a0weapon system\u2019s accuracy.<\/strong><\/li>\r\n<\/ul>\r\n<\/li>\r\n\t
                • The most accurate\u00a0Ring Laser Gyro based Inertial Navigation System (RINS)<\/strong>\u00a0supported by a highly reliable redundant\u00a0Micro Navigation System (MINGS)<\/strong>, ensures the vehicle reaches the target within two digit accuracy.<\/li>\r\n<\/ul>\r\n

                  Agni-V Missile<\/h3>\r\n

                  Agni-V was first test-fired in\u00a0April 2012<\/strong>\u00a0from Wheeler Island off the coast of Odisha, the test was successful. Following that, India conducted numerous advanced missile feature tests.<\/p>\r\n

                  \"agni-5-missile-image.jpg\"<\/p>\r\n

                    \r\n\t
                  • Agni-V is an\u00a0intercontinental ballistic missile (ICBM)\u00a0<\/strong>powered by\u00a0solid fuel.<\/strong><\/li>\r\n\t
                  • Nuclear-capable missile, which uses a three-stage solid-fuelled engine.<\/li>\r\n\t
                  • It's an advanced\u00a0surface-to-surface<\/strong>\u00a0ballistic missile.<\/li>\r\n\t
                  • It is a\u00a0three-stage solid-rocket-powered<\/strong>\u00a0missile capable of carrying a\u00a01.5-tonne nuclear warhead<\/strong>.<\/li>\r\n\t
                  • Range:<\/strong>\u00a05,000 to 5,500 kilometers.\r\n\r\n
                      \r\n\t
                    • Which puts major cities in China, including the capital Beijing, within its range.<\/li>\r\n<\/ul>\r\n<\/li>\r\n\t
                    • It is a\u00a0fire-and-forget missile<\/strong>\u00a0that cannot be stopped without an interceptor missile.<\/li>\r\n<\/ul>\r\n

                      Agni Prime Missile<\/h3>\r\n

                      Agni Prime Ballistic Missile was tested for the first time in\u00a0June 2021.<\/strong>\u00a0It is\u00a0lighter than any of the previous Agni missiles<\/strong>. It is the sixth and\u00a0most recent variant<\/strong>\u00a0of the Agni series missiles.<\/p>\r\n

                        \r\n\t
                      • Agni-P is a new generation nuclear-capable\u00a0medium-range ballistic missile (MRBM).<\/strong><\/li>\r\n\t
                      • It is a\u00a0two-stage\u00a0<\/strong>canisterised solid propellant ballistic missile.<\/li>\r\n\t
                      • This is a\u00a0surface-to-surface\u00a0<\/strong>ballistic missile<\/li>\r\n\t
                      • Range:<\/strong>\u00a01000 to 2000 km.<\/li>\r\n\t
                      • Payload:\u00a0<\/strong>Around 1,000 Kg<\/li>\r\n\t
                      • It incorporates upgrades such as\u00a0propulsion systems<\/strong>, composite rocket motor casings, and advanced navigation and\u00a0guidance systems.<\/strong><\/li>\r\n\t
                      • Agni-Prime may be launched by train or road and stored for an extended period of time. It can be used to target enemy ships in the\u00a0Indian Ocean.<\/strong><\/li>\r\n<\/ul>\r\n

                        Agni-VI Missile<\/h3>\r\n

                        Agni-VI is another powerful\u00a0intercontinental ballistic missile\u00a0<\/strong>said to be in its\u00a0early stages of development<\/strong>\u00a0by\u00a0DRDO\u00a0<\/strong>labs.<\/p>\r\n

                          \r\n\t
                        • It will be the most recent and advanced version of the Agni (missile) program.<\/li>\r\n\t
                        • It will be capable of being launched from\u00a0submarines or from land\u00a0<\/strong>and will be able to strike at a target of 6,000-10,000 km with\u00a0multiple independentlytargetable reentry vehicle (MIRV) warheads.<\/strong><\/li>\r\n<\/ul>\r\n

                          Agni Missile Significance<\/h2>\r\n

                          Agni missile series has elevated India's profile not only in technological, scientific, and security fields but also in international politics.<\/p>\r\n

                            \r\n\t
                          • Raise nuclear deterrence:<\/strong>\u00a0Agni-category missiles form the backbone of India's\u00a0land-based nuclear deterrence<\/strong>\u00a0and it is at the core of the country\u2019s deterrence in the larger context of the\u00a0Sino-Indian power equation.<\/strong>\r\n
                              \r\n\t
                            • The Agni-V project is aimed at boosting India's nuclear deterrence against China, which is known to have missiles like\u00a0Dongfeng-41<\/strong>\u00a0having ranges between 12,000-15,000 km.<\/li>\r\n<\/ul>\r\n<\/li>\r\n\t
                            • Boosting defence arsenal:<\/strong>\u00a0India\u2019s defence arsenal received a significant boost with Agni-V, considered India\u2019s first true\u00a0intercontinental range ballistic missile (ICBM).<\/strong><\/li>\r\n\t
                            • Intercontinental Range Ballistic Missile (ICBM) Club:\u00a0<\/strong>With the addition of Agni-V to its arsenal, India has now joined the elite ICBM club with just five other countries across the world: the\u00a0United States, Russia, France, China, and Britain.<\/strong><\/li>\r\n\t
                            • Nuclear retaliation to first strike:<\/strong>\u00a0India\u2019s nuclear doctrine commits to\u00a0\u201cno first use\u201d,<\/strong>\u00a0with weapons to be used only in retaliation against a nuclear attack on Indian territory.<\/li>\r\n<\/ul>\r\n

                              In a stand that reflects the capabilities India has built over the years, the doctrine states\u00a0nuclear retaliation\u00a0<\/strong>to a first strike will be massive and designed to inflict unacceptable damage.<\/p>","protected":false},"excerpt":{"rendered":"

                              Agni Missile: Indian ballistic missile series, including Agni-I to Agni-V, developed for strategic deterrence & national security. Check Agni Missile, History, Types, Range, Significance<\/p>\n","protected":false},"author":6,"featured_media":8388,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[239],"tags":[724,40],"class_list":{"0":"post-6234","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-quest-level-4","8":"tag-agni-missile","9":"tag-quest"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/upsc-exam\/wp-json\/wp\/v2\/posts\/6234","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/upsc-exam\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/upsc-exam\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/upsc-exam\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/upsc-exam\/wp-json\/wp\/v2\/comments?post=6234"}],"version-history":[{"count":1,"href":"https:\/\/vajiramandravi.com\/upsc-exam\/wp-json\/wp\/v2\/posts\/6234\/revisions"}],"predecessor-version":[{"id":19883,"href":"https:\/\/vajiramandravi.com\/upsc-exam\/wp-json\/wp\/v2\/posts\/6234\/revisions\/19883"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/upsc-exam\/wp-json\/wp\/v2\/media\/8388"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/upsc-exam\/wp-json\/wp\/v2\/media?parent=6234"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/upsc-exam\/wp-json\/wp\/v2\/categories?post=6234"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/upsc-exam\/wp-json\/wp\/v2\/tags?post=6234"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}