Major breakthrough in Hypersonic Missile development: DRDO conducts extensive long-duration test of Actively Cooled Full Scale Scramjet Combustor

📌 Summary:

• DRDO's Defence Research & Development Laboratory (DRDL) successfully conducted an extensive long-duration test of an Actively Cooled Full Scale Scramjet Combustor on May 9, 2026 at the Scramjet Connect Pipe Test (SCPT) Facility in Hyderabad

• A run-time of over 1,200 seconds (~20 minutes) was achieved, building on an earlier successful test of 700+ seconds conducted in January 2026 at the same facility

• The Scramjet combustor uses indigenously developed liquid hydrocarbon endothermic fuel, High Temperature Thermal Barrier Coating, and advanced manufacturing processes

• The combustor was designed and developed by DRDL and realised with industry partners; ground-tests validated both the combustor design and the SCPT facility capabilities

• Raksha Mantri Rajnath Singh described it as "a solid foundation for India's Hypersonic Cruise Missile Development Program"

• DRDO Chairman Dr Samir V Kamat congratulated the teams; this positions India at the forefront of advanced aerospace and hypersonic war technologies

🎯 UPSC Relevance: GS3 — Science & Technology (Applications, Indigenization in Defence); also relevant for GS3 Internal Security (strategic deterrence); Atmanirbhar Bharat in defence production

📝 Prelims Facts:

• SCPT = Scramjet Connect Pipe Test Facility, located in Hyderabad

• Scramjet is a supersonic air-breathing engine that operates at hypersonic speeds (Mach 5+); unlike rockets, it does not carry its own oxidiser

• DRDL (Defence Research and Development Laboratory) is a DRDO lab based in Hyderabad, specialising in missile systems

• 1,200 seconds = 20 minutes sustained combustion; previous record was 700+ seconds (January 2026)

🔑 Key Term: Scramjet (Supersonic Combustion Ramjet) — an air-breathing hypersonic engine that combusts fuel in a supersonic airflow; enables cruise missiles to travel at Mach 5+ speeds with high fuel efficiency compared to conventional rockets