India is developing two advanced variants of the Astra beyond visual range air-to-air missiles – Astra Mk-2 and Mk-3 – with one of them capable of striking targets at a range of 160km, when ready, and the other at almost 300km. The missiles are likely to be tested next year and in 2024 respectively, and are among the Defence Research and Development Organisation’s (DRDO) key ongoing programmes. The current Astra Mk-1 variant has a range of around 100km.

Long-range missiles allow fighter jets to shoot down hostile aircraft from a significant standoff range, staying out of the adversary’s air defence envelope.

IAF Orders Astra Mk 1

The defence ministry, on May 31, signed a Rs 2,971-crore contract with Bharat Dynamics Ltd (BDL) to equip the Indian Air Force and Indian Navy with Astra Mk-1 missiles and associated equipment, which was seen as a shot in the arm for “Atmanirbharta”, or self-reliance, in the defence manufacturing sector. DRDO has transferred technology to BDL for the production of the Astra Mk-1 and associated systems.

This is the first such indigenous missile to enter the service of the Indian armed forces, which has always depended on Russian (mainly R 73 and R 77) and French (Mica and Meteor) air-to-air missiles.

The government has ordered 248 missiles, including 48 for the Indian Navy. These will cater to the Sukhoi Su-30 MKI of the IAF and the MiG-29K of the Indian Navy. The Astra Mk 1 missile cost about Rs 7-8 crore each.

The plan is to integrate the missile on board the MiG-29 of the IAF and Light Combat Aircraft ‘Tejas’ Mk 1 in a phased manner.

While the Astra Mk 1 has a range of about 110 kilometres, sources said the real game-changer will be the next-generation version, which will have a long range of about 160 kms.

Astra Mk 1

The all-weather, night-capable missile is designed to engage and destroy fast-maneuvering supersonic aircraft. It is equipped with a fully indigenous active terminal guidance system and advanced electronic counter-countermeasures (ECCM) to reduce the effectiveness of enemy jamming. The missile also features lock-on before launch (LOBL) and lock-on after launch (LOAL) capability, allowing launching aircraft to take advantage of its reported maximum range of more than 100 kilometers. Astra Mk 1 has a maximum speed of Mach 4.5 (over 5,500 kmph).

The Astra Mk-1 missile has been fully integrated with the Sukhoi-30 fighters and will now add to the capabilities of other combat planes including the Tejas light combat aircraft, the officials said. Also, the navy’s MiG-29K fighters, which operate from India’s sole aircraft carrier INS Vikramaditya, will be equipped with the Astra Mk-1 missile.

Retaining Edge Over Pakistan

The IAF had an advantage over its Pakistani counterparts during the Kargil battle in 1999, but lost it in 2010 when the longer-range American AMRAAM was deployed by the latter.

During the aerial clash, India lost one MiG-21 fighter, while its more modern Su-30MKIs were forced to take defensive maneuvers to avoid getting hit by Pakistan’s US-made AIM-120 BVR missiles fired from F-16s.

Pakistan’s victory in this aerial clash may be attributed to its familiarity with India’s Su-30MKIs armed with Russian R-77 BVR missiles and its superior US-made AIM-120 BVR missiles fired from its F-16s.

Pakistan has a known stockpile of 500 AIM-120 BVR missiles for its F-16 fleet, giving it an edge versus India in BVR combat since 2010. It is considered among the most advanced weapon of its type in the world, equipped with an active seeker head with a range of 100 kilometers, in contrast to the export versions of India’s R-77 BVR missile that have a shorter range of 80 kilometers.

The then IAF chief, Air Chief Marshal RKS Bhadauria, had on 28 February 2020 said that the force is looking at regaining the upper hand in air-to-air missile capabilities that was “allowed to slip” amid a “struggle” to acquire missiles in a process that has lasted 15 years. The IAF chief was referring to the European-manufactured Meteor missiles, which have a range of about 150 km, which are now on board the Rafale fighters.

Plans to have them integrated with other fighters were ditched, however, because the cost was very high, with each missile costing about Rs 25 crore. Moreover, the European manufacturer of the missile — MBDA — told the IAF that the French-made Mirage 2000 and the Russian Su-30 MKI are not suitable for this missile, because the radars on board these aircraft would not do justice to its capability.

For the Tejas aircraft, MBDA said that the missile can be integrated only when the aircraft is equipped with the indigenous AESA radar, rather than the Israeli one that will be initially used. Following this, the IAF decided to restrict the Meteor missile to the Rafale and rely on better versions of Astra and Israeli I-Derby for its main firepower.

China has developed the PL-15 beyond visual range air-to-air missile that can hit targets at around 200km, while the Meteor  with a range of around 160 km is considered the best in its class in the western world, and the new Astra variants will put India in the big league.

The ongoing Russia-Ukraine crisis has exposed India’s overwhelming dependence on imported weaponry, especially from Russia, and underlined the urgent need for speeding up the indigenisation drive to become self-reliant.

Development Journey

India is developing the Astra series to replace the expensive Russian, French, and Israeli-origin beyond-visual-range missiles.

The development of the Astra missile began in 2001. The Mark-1 version of the missile was tested for the first time in May 2003. Since then, Astra Mark-I has been test-fired multiple times and integrated with Su-30 MKI fighters. Apart from the Su-30 MKIs, it will be integrated with Tejas Mark-1A and upgraded MiG-29s.

India has claimed to have fully indigenized production of the Astra, with the Indian Ministry of Defense saying that the missile had been designed with the need to reduce dependence on foreign sources. An early Astra version was equipped with the Russian Agat 9B-1103M active radar seeker and radio proximity fuse detonation mechanism. Sanctions on Russia – India’s traditional military supplier – could mean that sensitive components such as missile seeker heads may be harder to procure in the coming years.

In 2018, the DRDO informed Parliament that it had formally sanctioned the Astra Mark-2 project, although work had begun informally much earlier. The Mk-2 version is now entering developmental trial.

Ramjet Propulsion

Astra Mark-2 has a range of around 160 km. The new missile will have improved jammer resistance and an indigenous seeker. The missile will be equipped with a dual-pulse rocket motor, which is critical for its long range.

India has tested the technology critical for long-range air-to-air missiles. The latest test of solid-fuelled ducted ramjet (SFDR) technology was conducted in April 2022. The technology was also tested in March and December 2021. Astra Mark-3 is based on the SFDR propulsion, which is critical to the missile’s performance in the terminal phase.

The development of SFDR technology will enable India to make its own long-range air-to-air missile, which could mirror the capabilities of the best missiles in this class, like MBDA’s Meteor, which the Indian Air Force uses on its Rafales.

The Meteor missile also depends on its ramjet propulsion for more energy to manoeuvre during the endgame of the engagement. The ramjet motor [propulsion system] provides the [Meteor] missile with thrust all the way to target intercept, providing the largest No-Escape Zone of any air-to-air missile,” the literature on the missile on the MBAD website reads.

Export Potential

The move to develop the Astra missile with extended range is in line with India’s efforts to improve its aerial warfare capabilities against Pakistan, indigenize its defense industry and potentially position itself as an alternative source of Russian standard equipment.

Astra is economically and technologically superior to many such imported missile systems now in Indian service, such as the Russian R-77, Israeli Derby, and French Meteor BVR missiles.

Moreover, India has included the development of indigenous BVR missiles in its Third Positive Indigenization List, which mentions 101 military items that India aims to produce domestically from 2022-2027.

India may also choose to export its Astra Mk1, capturing a market niche for alternative suppliers of Soviet and Russian-standard equipment as questions rise about their reliability and effectiveness in sight of the losses Moscow has sustained in Ukraine.

International sanctions on Russia may also have made it difficult for its client states to place new weapons orders. Countries such as Indonesia, Malaysia and Vietnam may opt to purchase the Astra, which may be compatible with their Su-30 fighters and be more capable than the older Russian R-77 missiles which they now have in their inventories.

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The indigenously developed missile will be flight tested from a ground launcher being set up at launching complex III of Integrated Test Range (ITR) off Odisha coast.  The initial trials of the successor of Astra Mk I will be to test the weapon system’s ballistic performance. Once the safe release of the missile from the ground launcher and its propulsion and navigation are validated, it would be test fired from a fighter aircraft.

The go ahead for Astra Mk II was given nearly seven months after the Defence Acquisition Council (DAC) approved the procurement of Astra Mk I for the Indian Air Force (IAF) and Navy.

While the previous version of Astra missile has a range of about 110 km, its advanced variant can strike targets 160 km away. Equipped with improved jammer resistance and dual pulse motor having thrust vector control, the Astra Mk II is latest among the air-to-air missiles of its class. The DRDO has developed an indigenous seeker to improve the performance of the missile and replace the Russian radio frequency seeker used in the Astra Mk I. 

The missile will be powered by Solid Fuel Ducted Ramjet (SFDR), which will enhance its performance and increase the strike range. Procurement of Astra Mk I for the IAF was approved after it completed ground tests and air trial from a Sukhoi 30 MKI aircraft. Process is on to integrate the missile with the Made in India Tejas fighter jet. 

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The Astra fills up the critical air-to-air missile gap vis-a-vis Pakistan, which was exposed during the post-Balakot aerial confrontation over the Line of Control on February 27 last year.

The 110-km range of the Astra neutralises Pakistan’s advantage over India in air-to-air weaponry. Against the Pakistan Air Force (PAF) AIM-120 AMRAAMs with a range of 110 km, the maximum air-to-air reach of the IAF was under 80 km with the R-77. As a result, IAF’s frontline Su-30 MKIs were forced into defensive manoeuvres when the AMRAAM-armed PAF F-16s attacked India in retaliation to India’s cross-border air strike on the Jaish-e-Mohammad terrorist camp at Balakot in Pakistan on February 26.

The Astra is capable of engaging “both short-range targets at a distance of 20 km and long-range targets up to a distance of 80-110 km” at varying altitudes, an IAF spokesperson elaborated.

The Astra is India’s first indigenous air-to-air missile. The features of this all-weather BVR include mid-course inertial guidance with terminal active radar homing.

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