“Arjun,” India’s Mythical Warrior, Is Nearing Reality by 1LT Adam Geibel An Arjun prototype during trials. Relations between India and Pakistan some point in 1983-84), with a number However, Army Chief of Staff Gen. have been in a state of simmering hostil- of prototypes undergoing technical test- Shankar Roy Choudhury pointed out ity since the 1971 War, which was char- ing while desert trials were scheduled for that, while some of the tank’s parameters acterized by some intense armor battles that summer. Indian Army Chief of Staff needed to be “further fine-tuned,” they on both the Eastern and Western fronts. GEN A.S. Vaidya and Dr. V.S. Arun- have enough confidence to plan Arjun achalam (Scientific Advisor to the De- variants — mobile assault guns, an ob- While the United States had supplied fence Minister) presided at the cere- servation post vehicle, an air defense M48 and M47 “Pattons” to Pakistan, the Soviet Union has been the primary sup- mony, announcing that they planned to (gun or missile) version, a recovery ve- have the Arjun in service by the end of hicle, an engineer vehicle, and bridgelay- plier of MBTs to India since the ’60s. At the decade. ers. New bridgelayers and recovery vehi- that time, two armored divisions fielded cles were necessary, given the Arjun’s about 900 T-55s. These served well in At the time, it was reported to have a substantial weight increase over the T- both the 1965 and 1971 wars with Paki- 120mm smooth-bore main gun and stan, but both belligerents recognized the would use a 1400-hp MTU-based diesel 72M1 series. limitations of existing designs. This until an indigenous one was ready. Technical Background sparked the India-Pakistan MBT race. Weight would be about 50 tons, and the tank would cost about $1.6 million The 59-ton 15th Variant can achieve a In addition to sequential upgrades of maximum speed of 70 kph (55 mph) and models already in their inventories, both (U.S.), but development costs rose about cross-country speed of 40 kph with its 500 percent throughout the ’80s. countries embarked on indigenous MBT Twenty-six years later, through a devel- 1400-hp powerplant. The Arjun’s hy- designs. India’s “Arjun” and Pakistan’s opment process plagued with delays, the dropneumatic suspension can be hard- “Al Khalid” have soaked up millions of end product visually resembles the Ger- ened or softened, according to the ter- defense dollars, with little more to show rain, and the 1,610-liter fuel tank allows for the dual efforts then a handful of pro- man Leopard II, however, unlike the for a cruising range of 200 km (120 totypes and pre-production models of German vehicle, its future is in doubt. miles). both tanks. According to Indian Defense Minister The semiautomatic transmission, hy- Arjun Development History Sharad Pawar, there were 12 prototype drodynamic torque converter, retarder, Arjun MBTs “in an advanced stage of and integral system are local designs (the At the end of the 1971 war, the Indian army realized the limitations of their development” as of October 1991. At designers seek to produce from 70 to 80 that point, the first production Arjuns percent of the tank’s parts in-country.). tank fleet in the harsh desert conditions were projected to be in service by 1995. The service brake consists of a hydrauli- of Rajasthan, a northwestern Indian state Years of firepower and tactical tests on cally operated, high-performance brake bordering Pakistan, so they initiated their the firing ranges in desert and semi-arid disc that is incorporated into the final own MBT design. The first “Arjun” (named after a mythical Hindu warrior conditions followed, until the Indian drive. Army considered the results “excellent.” prince) concept was laid out in 1974 by Indications were that the Indians were To ensure crew survivability, produc- the Combat Vehicles Research and De- tion versions will have the indigenously- velopment Establishment (CVRDE) of ready for production decisions. Then the researched and developed ‘Kanchan’ Pakistani’s announced in 1985 a deal the Defence Research and Development with the Ukraine to purchase T-84s, composite armor, an automatic fire de- Organization (DRDO). Based on 1971 This announcement caused another tection and suppression system, and an battlefield experiences, the Arjun would flurry of activity in the Indian tank de- NBC protection system designed and have a locally-designed, rifled 120mm built by the Bhabha Atomic Research main gun, a German, MTU-based diesel velopment community. Center. powerplant (The Indians consider turbine On 9 January 1996, the Arjun was for- The tank exerts a ground pressure of engines fuel guzzlers), and a computer- ized fire control system with a laser mally unveiled and cleared for mass pro- .84 kg/cm square and can climb a gradi- duction. According to Scientific Adviser ent of 35 degrees (necessary for crossing rangefinder. to the Defence Minister, Dr. APJ Abdul Rajasthan sand dunes). Since the river- One of the early Arjun prototypes was Kalam, the Indians consider the Arjun strewn Punjab area “ditch cum bund”’ unveiled to the public in April 1985 comparable to the M1A2 Abrams, defenses caused innumerable problems (though it was probably ready to roll at Leopard 2, and Leclerc. during the 1971 War, the Arjun can cross ARMOR — May-June 1998 33 1.4-meter-deep channels and 2.43-meter on the Vijayanta’s Mk 1B FCS devel- fire control system in favor of whatever trenches. oped by Bharat Electronics, but this was is accepted for the T-72M1 upgrade pro- probably an earlier prototype). gram. Since the Arjun extends beyond The rifled 120mm gun, which includes the official width limit on either side of a a muzzle reference system, is made of The gunner’s main sight includes day- ESR steel and is fitted with a thermal light, thermal sight, and laser rangefinder standard Indian flatbed rail car, strategic transport would be extremely difficult. sleeve and fume extractor. All main gun channels. The common sighting head This would also require that India refur- rounds use a semi-combustible cartridge mirror is stabilized in elevation and azi- case with increased energy propellant for muth. The daylight sight has dual magni- bish large sections of her rail network, as well as acquire new rolling stock. (This higher muzzle velocity and greater pene- fication while the thermal imager pro- is nothing new in the annals of tank de- tration characteristics. In addition to the vides a night vision facility to the gunner velopment, as the Germans had this usual suite of rounds, an anti-helicopter and the commander. same problem when fielding the ‘Tiger’ round is under development as well. On- board ammo is stowed in watertight con- The LRF (integral to the gunner’s Mk VI during World War II.) sight) has a range of nearly 10 km and a tainers (indicating possible wet-stow- thermal imager (which can “see”’ at The MTU powerpack derates at high age). temperatures, and ammunition stowage around 5.5 km, recognize a target at 3.1 had to be reduced in order to increase The Arjun’s fire control system in- km and identify targets at 2.5 km). The cludes a laser rangefinder, ballistic com- Arjun fire control system’s ability to fire engine cooling, however, plans remained in place to acquire 1,500 engines up un- puter, thermal imaging night sight, stabi- on the move during the night is a major til mid-’97). lized panoramic sight for the tank com- step forward for Indian armored forces. mander, and a secondary telescopic The problems with the hydropneumatic sight. (One source had this system based The commander’s panoramic sight pro- suspension can possibly be linked to the vides 360-degree surveillance without Arjun’s difficulty in climbing sand dunes the TC moving his eyes from the sight and also without disturbing the lay of the and other obstacles easily, with a sharp turret. The field of view is stabilized drop in speed in its attempt to do so. ARJUN Mk 1 with the help of a two-axis rate gyro Furthermore, the technology transfer of (15th Prototype Model) mounted on the platform of the head the imported engine, gun control system, mirror. and fire-control system have been tied Weight: 59 tons (58.5 tonnes) up with most vendors (like MTU and Apparently, improvements were Holland’s Oldelft, which makes the LRS Length (gun forwards): 10.19m deemed necessary even after the Arjun 5 fire control system) to produce compo- Width (w/ skirts): 3.85m design profile was accepted again in July nents in India in a phased manner. Height (w/o 12.7mm AAMG): 2.32m 1996, an acceptance which would have allowed production to commence when Defects noticed during the user trials of Engine: 1400 HP MTU 838 Ka 501Diesel funding became available. However, the Arjun Mk.1 MBT, including over- (some reports of 1500 HP) some elements of the chosen version fell heating of the engine in Rajasthan desert Transmission: Semi-automatic with 4 for- far short of army specifications. areas, had supposedly been “by and ward and 2 reverse gears. large overcome” while other complaints (also reported as ZF automatic) On 27 August 1996, the Defense Pro- duction and Supplies Secretary ordered were being addressed. CVRDE has Fuel: 1610 ltrs mostly rectified the other problems in 15 pre-production tanks from the Heavy the hydro-pneumatic suspension. PERFORMANCE Vehicles Factory, Avadi (at which point, one Indian media estimate placed the While the Heavy Vehicles Factory at Max Speed: 72-70 kph (55 mph) project cost at $112 million (U.S.).