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  • Sci. & Tech.
    IISC develops technology for increasing range of missiles

    Bangalore (PTI) A team from the Indian Institute of Science (IISC) here has developed a innovative technology for increasing the range of Agni type of missiles without additional cost.

    The team headed by Prof K P J Reddy from the department of Aerospace Engineering, IISC, achieved the feat by reducing the drag of the missile encountered during its flight, an IISC release said here on Monday.

    The drag is the main phenomenon which dictates the range of the missile for a given amount of fuel as the thrust generated by the rocket engine must compensate for the drag encountered by the missile in its path.

    Existing techniques for reducing the drag force involve addition of an aerospike at the nose the missile or blowing a supersonic gas jet from the missile nose tip.

    Implementation of these techniques involves major modification to the missile structure and hence cannot be applied to existing missiles which are in stockpile.

    The new technology developed by Prof Reddy's group involves a radically different technique in the sense that no additional device or power was required for hypersonic flight.

    The technique is to coat the nose portion of the missile with a thin layer of material such as chromium. This metal evaporates due to heating of the missile nose during its hypersonic flight and the evaporated metal particles in atomic form react exothermically with oxygen atoms surrounding the body to release additional heat into the air in front of the missile.


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