Successful Test of SFDR
- Missile was guided to high altitude to simulate aircraft release conditions and subsequently nozzle-less-booster was ignited.
- SFDR based missile accelerated to achieve ramjet Mach number successfully. The trajectory was tracked by telemetry and radar stations till touchdown. All the mission objectives have been met.
- The success of SFDR propulsion technology is a significant milestone and will pave the way for development of long range air-to-air missiles in the country.
- The ramjet propulsion system used in the SFDR acts as an oxidizer and the solid propellant reacts as air flows through a solid propellant duct.
- Unlike conventional rockets that carry propellant and oxidizer, Ramjet uses the air as an oxidizer just like a jet engine. Therefore the weight of the fuel required is eliminated.
- The SFDR propulsion is designed in such a way that it allows for an up and down throttling. This further lets the missile to amplify its speed until it reaches the terminal phase of the flight.
- The speed increases until the point when sharp turns are required to search for highly manoeuvring targets.
- The first flight of SFDR, developed under a joint Indo-Russian R&D project, was tested in 2018. It had achieved the speed of Mach 3.
- The Indian SFDR will be used as variants of missiles such as the advanced version of ASTRA.