The SFDR has been developed by the Defence Research and Development Laboratory (DRDL), Hyderabad, in collaboration with other DRDO laboratories like Research Centre Imarat (RCI), Hyderabad, and High Energy Materials Research Laboratory (HEMRL), Pune.Equipped with an advanced propulsion system, nozzle-less booster and thrust modulation system, the missile has been uniquely designed to deliver specific impulse in ramjet mode.”The SFDR-based missile is usually boosted into a high-altitude trajectory to simulate aircraft-launch conditions and then the nozzle-less booster guides the weapon towards its target. The system utilises a solid fuelled air-breathing ramjet engine, which takes up oxygen from the atmosphere during flight,” said the official.Last month, former DRDO chairman G Satheesh Reddy had told TNIE that SFDR will propel the country develop long range air-to-air missiles. Once fully developed, India will be the first country to possess such capability, he had said.On November 16, India had successfully test-fired its first long-range hypersonic missile capable of destroying targets 1,500 km away. The 3,500 km range K-4 missile was successfully flight tested from the INS Arighaat submarine on November 27.
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