DRDO Successfully Demonstrates Solid Fuel Ducted Ramjet (SFDR) Missile Technology

The Defence Research and Development Organisation (DRDO) on February 3, 2026, successfully demonstrated Solid Fuel Ducted Ramjet (SFDR) technology from the Integrated Test Range (ITR), Chandipur, off the coast of Odisha.

With this achievement, India joins an elite group of nations possessing SFDR technology, a critical capability for the development of long-range air-to-air missiles, providing a significant tactical edge over adversaries.

SFDR technology is vital for next-generation air combat as it enables missiles to achieve enhanced range, higher speed and superior manoeuvrability. Missiles equipped with SFDR propulsion can engage highly manoeuvring aerial targets at ranges between 50 km and 340 km, while sustaining supersonic speeds of Mach 2.0 to Mach 3.8.

Unlike conventional solid rocket motors, which burn out shortly after launch, an SFDR-powered missile uses atmospheric oxygen to sustain combustion during flight. This allows sustained supersonic cruise, powered interception, and high ‘g’ manoeuvring capability. The technology also provides a wider no-escape zone and improved tail-chase capability, significantly enhancing kill probability.

The SFDR propulsion system incorporates several advanced technologies, including a nozzle-less booster, hot gas valve controller, high-energy boron-based sustainer, long-endurance thermal protection insulation, and innovative air intakes.

The successful test marks a major milestone in India’s efforts to strengthen indigenous missile development and enhance the combat capability of the Indian armed forces through cutting-edge defence technologies.