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Celebrity Bewarse
Username: Blazewada
Post Number: 7998
Registered: 08-2008
Posted From: 218.186.8.238
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Votes: 0 (Vote!) | | Posted on Monday, March 08, 2010 - 2:59 am: |
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Made in India. @ DRDL Hyderabad   eyyandi daruvu 
Hyderabad: In Rajasthan, this May, the indigenously developed Nag (Cobra) missile will undergo a final round of trials before entering service in the Indian Army’s arsenal.
How it works
Here's how it works. Nag missile operators search for enemy tanks through thermal imaging telescopes, which see as well by night as they do by day. Picking up a tank, the operator locks the Nag's seeker onto the target. A digital snapshot of the target is automatically taken, which serves as a reference image.
As the Nag streaks towards the target, at 230 metres per second, the seeker takes repeated snapshots of the target; each one is compared with the reference image, and deviations are translated through on-board algorithms into corrections to the Nag's control fins, which steer the missile precisely at the target.
This method of firing is termed "lock-on before launch" or LOBL. In the pipeline is an even more sophisticated method -- - "lock-on after launch" or LOAL -- - for the helicopter-mounted Nag, or HELINA, which can target a tank 7 kilometres away. Since the target will seldom be visible at such a distance, the missile operator launches the HELINA in the general direction of the target. As it flies towards the target, the Nag's seeker downlinks to the missile operator images of the area ahead; after travelling 3-4 kilometres, i.e. after about 12-16 seconds, the operator will be able to identify enemy tanks. He will lock the seeker onto the tank he wishes to destroy, and the command will be uplinked to the missile in mid-flight. After that, the missile homes in onto the target and destroys it.
The Nag provides its operator with another important tactical advantage. The plume of burning propellant from the tail of most missiles gives away its flight path and allows the target to get behind cover. The Nag, in contrast, is visible only during the first one second of flight, when the missile's booster imparts 90% of the momentum; after that, a sustainer maintains the missile's speed, burning a smokeless propellant that is practically invisible.
DRDO's Triumph
Acceptance of the Nag missile into service will be a triumphant conclusion to the Defence R&D Organisation's (DRDO's) long-delayed, but eventually successful, Integrated Guided Missile Development Programme (IGMDP). Initiated in 1983 by then DRDO boss, Dr APJ Abdul Kalam, the IGMDP set out to develop five missiles: the Agni and Prithvi ballistic missiles; the Akash and Trishul anti-aircraft missiles; and the Nag ATGM. Only the Trishul will have failed to be accepted into service.
Source: Business Standard
Real Bewarse 
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