Vol.7     No.5      October1999                                                                 ISSN:0971-4413
TECHNOLOGY FOCUSDRDO LOGO
Bulletin of Defence Research & Development Organisation

 

30 mm HE GRENADE FOR AGL

By virtue of its light weight, high rate of fire, mounting capability on various vehicles, crest clearance trajectory, etc, Automatic Grenade Launchers (AGL) is extensively used for a close quarter battle. So, AGLs can be used in both direct and indirect fire modes in plains and in hilly terrains, respectively. In the present war scenario, where the armies are equipped with sophisticated and effective communication, identification and surveillance systems, AGL provide organic fire support at company level by virtue of their quick response to direct fire power on enemy threat, immeDIATely after the threat is identified.

In the country, 30 mm AGL is being used by the infantry at company level as a light support weapon. The weapon is complimentary to MMG and 51 mm caliber mortar and can be deployed in open area or while protected in trench. DRDO has developed 30 mm HE Grenade for this AGL system against Army’s recurring requirement of six lakh rounds per annum. This ammunition has been accepted by the users for introduction into the Services and is being productionised in Ordnance Factories.

The dual-mode fuze is one of the most complex fuzes having four detonators and three delays. Self-destruction delays is the highest duration delay so far developed indigenously. It evolves about 190 cc gases by volume and a special mechanism is provided to allow the escape of the gases to avoid build-up of pressure inside the fuze configuration. This escape of the gases affects exterior ballistics of the projectile and so gases are made to escape uniformly. Additionally, the fuze has various safety features included in its design. Extensive dynamic trials were conducted to achieve minimum blind percentage not exceeding 5 per cent. For pre-fragmentation purpose, a pre-fragmented notched coil is designed. Extensive fragmentation and lethality trials have been conducted to achieve the desired terminal effect.

CHARGE LINE MINE CLEARING EQUIPMENT

DRDO has developed two types of mine clearing equipments, namely, Charge Line Mine Clearing (Vehicles) (CLMC(V)) and Charge Line Mine Clearing (Personnel)(CLMC(P)).

CLMC (V)

This equipment has been developed to clear pressure-sensitive antitank mines in a mine field and to create a safe lane of 300 m length and 6 m width for the tank movement. The equipment consists of an explosive line charge which is projected onto the mine field with the help of rocket cluster. The equipment is mounted on a trailer which is capable of being towed by a tank. The line charge is straightened in flight with the help of parachutes. An initiator is fixed at the rear end of the explosive hose which detonates the explosive after a delay of 10 s on landing. The blast generated on detonation actuates the pressure-susceptible antitank mines. The item is under production for the Services.

CLMC (P)

This equipment is developed to clear antipersonnel mines in the mine field to create a 180 m long and 0.5 m wide path. The equipment consists of an explosive filled hose and a rocket motor to project the hose onto the mine field. A parachute connected to the rear end of the hose helps to keep the hose straight while landing on ground. It also consists of two initiators each fixed at front and rear ends of the hose. The initiators function after a delay of about 8 s after landing and detonate the explosive. The blast generated on detonation, actuates the pressure-sensitive antipersonnel mines. The equipment can be used in the assault stage of an attack operation for providing safe lanes to infantry. If safe lanes are not possible to be made during assault stage due to tactical reasons, the equipment can be used in the reorganisation stage for making safe lanes. The equipment has already been introduced into the Services.

Important Characteristics
Parameter CLMC(V) CLMC(P) Parameter CLMC(V CLMC(P)
  Explosive Propellant (kg 16 4.2
Length (m) 300 in 10  segments 180 in 6 packs Total weight (kg) 32 each 16
Weight 240 in each sgments 78 General
Hose OD(mm) 125 30 Total weight(kg) 3300 251
Stand off(m) 50-70 50-100
Total Weight(kg) 330 of each segments 32 Safelane distance (m)
Rocket Length 250-300 180
No of rockets 6 1 Width 6.0 0.5

 

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Armaments,Indian Small Arms System, MultiBarrel Rocket System- Pinaka ,Fin Stabilized Armour Piercing Discarding Sabot, Illuminating Ammunition ,Bund Blasting Device,30mm HE Grenade for AGL,Charge Line Mine Clearing Equipment ,Propellant Technology, 84mm Light Weight RL Weapon ,Warheads ,Lead Zirconate Titanate Based Piezoceramics ,Armament Research Board