Defence sources said that the successful test-firing today will pave the way for user trial of the most potent Indian missile and its eventual induction into the strategic forces command (SFC).
The three-stage, solid propellant surface-to-surface missile was test-fired from a mobile launcher from launch complex-4 of the Integrated Test Range (ITR) at about 1105 hours, DRDO sources said.
About 17-metre long and weighing over 50 ton, the surface-to-surface missile majestically rose from the confines of its canister flawlessly and achieved all targets, sources in Defence Research and Development Organization (DRDO) said.
While the first test was conducted on April 19, 2012, the second was on September 15, 2013 and the third on January 31, 2015 from the same base.
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Among the missiles of Agni series, the latest Agni-5 is the most advanced having some new technologies incorporated with it in terms of navigation and guidance, warhead and engine, the sources said.
Lot of new technologies developed indigenously were successfully tested in the trial. The very high accuracy Ring Laser Gyro based Inertial Navigation System (RINS) and the most modern and accurate Micro Navigation System (MINS) had ensured the missile reached the target point within few meters of accuracy.
The missile is so programmed that after reaching peak of its trajectory, it turns towards earth to continue its journey towards the intended target with an increased speed due to the attraction of earth's gravitational pull and its path precisely directed by the advanced on-board computer and inertial navigation system.
The atmospheric air rubbing the skin of the missile during the re-entry phase raises the temperature to beyond 4000 degree Celsius.
However, the indigenously designed and developed carbon-carbon composite heat shield continues to burn sacrificially protecting the payload, maintaining the inside temperature below 50 degree Celsius.
The first two flights of Agni-5 in 2012 and 2013 were in
open configuration and had already proved the missile.
The third test in 2015 and today's launch from a canister integrated with a sophisticated mobile launcher were in its deliverable configuration that enables launch of the missile with a very short preparation time as compared to an open launch, they said.
At present, India possesses Agni-1 with 700 km range, Agni-II with 2000 km range, Agni-3 and Agni-4 with with 2,500 km to more than 3,500 range in its armoury of Agni missile series, they said.