The significance of India's Astra missiles, which Indonesia is buying

📌 Summary:

• India and Indonesia signed a deal for the supply of Astra Mk 1 beyond-visual-range air-to-air missiles (BVRAAM) — India's first-ever export of Astra; the missiles will arm Indonesia's Su-30 fleet

• The deal came alongside agreements on BrahMos supersonic cruise missile sale, defence technology transfers, critical mineral extraction and maritime security cooperation

• Astra Mk 1 (developed by DRDO): range 80–110 km, altitude up to 20 km, speed Mach 4.5; features inertial guidance, mid-course update and terminal active radar homing; integrated with IAF's Su-30 MKI, with plans for Tejas Mk 1A and Rafale; flight-tested last year with an indigenous RF seeker

• Astra Mk 2: enhanced range ~200 km with a dual-pulse solid rocket motor (conserves energy, reignites in terminal phase, making evasion difficult); received Acceptance of Necessity from the Defence Acquisition Council in December last year

• Astra Mk 3 'Gandiva' (under development): Solid Fuel Ducted Ramjet (SFDR) propulsion for continuous thrust, range expected over 350 km

• Strategic logic: Astra is India's indigenous counter to China's PL-15 (used by both Pakistan and China); Operation Sindoor demonstrated the criticality of long-range BVRAAMs; the programme cuts dependence on imported Meteor and R-77 missiles

• Export potential: BrahMos is also being supplied to Indonesia, Vietnam and the Philippines; India is likely to explore more friendly countries for Astra sales

🎯 UPSC Relevance: GS3 Science & Technology / Defence — indigenisation (Atmanirbhar Bharat in defence), defence exports as foreign-policy instrument, Indo-Pacific strategic cooperation

📝 Prelims Facts:

• Astra Mk 1: BVRAAM by DRDO; range 80–110 km, Mach 4.5; first export customer — Indonesia

• BVR missiles engage targets beyond 20 nautical miles (37 km)

• Astra Mk 3 is named Gandiva and uses Solid Fuel Ducted Ramjet (SFDR) technology

🔑 Key Term: BVRAAM (Beyond-Visual-Range Air-to-Air Missile) — an air-launched missile capable of engaging aerial targets beyond 37 km, guided by inertial navigation and active radar homing