MORTAR BOMB 51 MM ILLG 1A
ROLE :
Bomb 51mm Illg belongs to the family of Illg Ammunition used extensively to support night warfare. It provides adequate illumination to support infantry combats, aerial photography and army movement.
FUNCTION :
The bomb is fired from a 51 mm Mortar, smooth bore, muzzle loading weapon. The Ammunition has unique features of multiple delay system enabling to achieve variable ranges from 350 to 950 metres. 4 delays are provided with a time setting 3.5 Sec, 6 Sec, 9.5 Sec and 11.5 Sec. The illuminant supported by parachute is deployed in the air and gives illumination for a period of more that 30 Secs.
SPECIFICATION /CHARACTERISTICS :
Estimated mass 930 ± 25 gm
Net explosive content 215 gm (Approx)
Length 283 ± 2 mm
Diameter 50.7- 0.1 mm
Duration of burning 30 sec (min)
Luminosity 250,000 candela
Range with 3.5 to 1.5 sec delay setting 300 to 900 m
Weapon 51 mm mortar
Shelf life 10 years
 
ADVANTAGE :

a.

Variable range can be achieved.

b.

Easily adjustable multiple delay system. Setting possible in the night also.

c.

No fuze is required

d.

Provided with canvas bag for carrying on the shoulder

e) Fit for air drop and sea worthy transportation in the packed condition.
f) Easy identification at night
g. Can be fired in any terrain including desert and snow bound land.
 
QUALITY :
Quality control technique and quality assurance measures ensure desired performance. Sub-assemblies like tail unit, primary cartg, Illuminant subjected to test/proof before final assembly. Apart from standard checks and tests, a lot of 1000 Nos. is subjected to functional (dynamic)proof. The Ammn is based on double sampling plan with 10% AQL for major defects as contained in the quality assurance documents. Critical defects like premature functioning not permissible.
SAFETY :
The Ammunition is safe in all respects during handling, operation and transportation.
RELIABILITY :
a) This is a proven design with high degree of reliability.
b) The delay time, which is the brain of the Ammunition is highly consistent.
SHELF LIFE OF FILLED BOMB :
10 years
PACKING :
Packing consists of inner and outer packages. The inner package is HDPE/LDPE container. Six such containers are packed in canvas bag with shoulder strap. Four canvas bags are then packed in wooden/steel box. Gross weight of each box containing 24 bombs is 46 Kgs.
STOWAGE DIMENSION :
620 mm x 405 mm x 420 mm holding 24 bombs
HAZARD CLASSIFICATION :
The bomb is classified in the
Compatibility group G
Hazard Division 1.2
Fire fighting classification 2
Contact :
Marketing & Export Division
Ordnance Factory Board
Ayudh Bhawan
Government of India
Ministry of Defence

10A, S. K. Bose Road, Kolkata – 700 001, India.
Tel: 0091-33-2248 9027 / 2248 2103 / 2248 5077-80
Fax : 0091-33-2248 1748/2210 8235
Mail : ofbtrade@dataone.in
http://www.ofb.gov.in