DRDO carries out successful demonstration of Solid Fuel Ducted Ramjet technology

• SFDR is an air-breathing ramjet propulsion technology that uses solid fuel combusted with ducted atmospheric air, giving missiles sustained supersonic speed without carrying onboard oxidiser.
• DRDO's successful demonstration on 03 Feb 2026 places India in an elite league of nations (alongside US, Russia, France, China) possessing the tech, enabling long-range air-to-air missiles.
• UPSC relevance: GS-III (Defence Tech, Indigenisation, Atmanirbhar Bharat) and Prelims (propulsion classification, DRDO labs, test ranges).