Solid Fuel Ducted Ramjet (SFDR) is a missile propulsion technology developed in collaboration with India and Russia, which works on the concept of 'ramjet engine' principle. This enables the missiles to intercept air threats at extreme ranges at supersonic speeds.
The system uses a solid fuel ramjet engine. In this, solid propellant ramjets use oxygen from the atmosphere during flight.
It is developed by Defense Research & Development Laboratory, Hyderabad in collaboration with other DRDO’s laboratories (Research Centre Building, Hyderabad and High Energy Materials Research Laboratory, Pune). Recently, the 'Solid Fuel Ducted Ramjet' (SFDR) booster was successfully test-fired from the 'Integrated Test Range' (ITR) at Chandipur, Odisha.
A ramjet, an 'air breathing engine' is a variant of the jet engine that uses the vehicle's forward motion to compress the incoming air without a rotating compressor, thereby generating pressure.
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