New
Delhi, 26 July 2006
“We have to draw correct lessons from the partial success of
Agni-III’s test launch …..”
–– Defence
Minister Pranab Mukherjee
(addressing the
parliamentary consultative
committee on
defence. July 12, 2006.)
The test launch
of India’s latest IRBM, Agni-III was far from a partial success, in
fact there are no partial successes in the missile business. Your
missile either performs the exact task of transporting a warhead of
particular size and mass to a predestined range on a predetermined
trajectory, within a certain set of accuracy parameters, or it
doesn’t. What DRDO had in Agni-III was a perfect lift-off and
satisfactory functioning of the first stage of this two stage
rocket, while the failure has been preliminarily attributed to a
snag in the guidance system which affected the stability of the
missile.
The test
however, was not a complete failure. It did validate many design
features and fabrication technology, not to mention the
conceptualisation of the whole project. The Agni-III was a
completely new design and not an augmentation of the earlier Agni-II
variant.
Built to achieve
an increase in range and war load parameters amongst other things,
its design followed the latest trend in development of long range
missile systems elsewhere, a design philosophy similar to Russian
RSD-10 Pioneer IRBM (NATO: SS-20 Saber) and Chinese DF-21(CSS-5)
theater missiles and DF-31 ICBM (CSS-9). As opposed to pencil thin
and long shapes of earlier Agni variants it was a stubby and short
missile.
The Agni-III had two stages with an overall diameter of 1.8 m. The
first stage mass was about 24 tonnes and 7 m long, the second stage
mass was about 8 tonnes and 2.5 m long. The missile was likely to
support a wide range of warhead configurations, with a 3,500 km
range and a total payload weight of 1000 kg.
The main
importance of the Agni-III principally lay in the increase in range
and flexibility in basing restrictions vis a vis China. Currently
operational Indian IRBMs suffer from range restrictions in relation
to their intended targets. While the Agni-II remains the longest
range Indian missile system, it has little operational value as its
2000+ km range is at the best a threat weapon against parts of
western Chinese territory. Its best utility was as a technology
demonstrator and proving system for follow on series of long range
systems such as Agni-III. The Agni-I was a later design, born out of
tactical exigencies of nuclear primacy during the Kargil conflict.
It had a single stage rocket using the first stage of the Agni-II
and was developed in a short period to counter the North Korean and
Chinese supplied rockets in the Pakistani arsenal which reportedly
went active at some stage of the standoff. The claimed range of 850
km was suited to target the Pakistan heartland, without taking
recourse to deployment in border areas as in the case of short range
battlefield missiles like the Prithvi.
The Agni-III
itself can only be an interim step on the way to a true long range
system such as a 5000 km or more range missile approaching ICBM
capabilities. Road and rail mobile variants will be best suited to
undertake deterrent duties against China, by using quick relocation
and dispersal capabilities to escape pre-emptive decapitation or
subsequent counter force strikes. A sea based variant was also
expected to follow into service as part of the K-15 sub-surface
launch platform project of DRDO. All that of course can only follow
after achievement of penultimate stages such as the Agni-III.
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