Bomb 81mm PWP(Plasticised White phosphorous) Smoke type Screening Ammunition is used in combat field to achieve dense Smoke screen for facilitating tactical deployment of troops and screening from enemy fire.

The bomb is fired from the 81mm smooth bore Mortar which is a muzzle loading weapon. The Ammunition is also compatible with same calibre Weapons of Hotchkiss Mortar long barrel.In using with Hotchkiss short barrel Mortar M1 and Mortar M29 firing is limited upto charge 5 or 6 The direct percussion Fuze intiates the Bomb to burst at target and generate the white screening smoke uniformly.The fuze used is percussion direct action type No.162MK8 (M2).The Bomb is filled with plasticised white phosphorus.These bombs are assembled with an Adapter Tube Assembly instead of Nose container . The Primary Cartridge containes 7.4grams (nominal) of propellant N:G:B 051.The augmenting charges are in number of Horse shoe shaped celluloid containers,protected by half cups containing 12.47 grams(nominal)of propellant NGB221. The bombis stabilised in fight by fins of Tail unit No 1A.

Specifications

CHARACTERISTICS

Approx Qty.of PWP                   : 500 gms.

Length of Bomb with Fuze            : 378 mm

Appox Mass of the filled Bomb       : 4.4 kg
 
Net Explosive Content               : 840 gms.

Muzzle velocity                     : 295 m/s

Maximum range                       : 5000 metres at charge 8
                                        variable changes can be
                                        acheived by adjusting the
                                        no.of  augmenting
                                        cartridges/charges

Time for build up of Smoke          : 5 seconds

Average duration  of smoke          : 20 seconds

Colour of Smoke                     : White

QUALITY

Strict quality checks are observed during various stages of production.The bomb body as well as other components are proved/inspected separately in empty stage before being released for filling and assembly.Added to this, functional proving is carried out in assosiation with the Services Quality Assurance Organization.The bombs are filled and assembled in lots of 1000 Nos.

SAFETY

Multiple mechanical safety arrangements have been provided in the Fuze to ensure total safety during handling and tranportation.

RELIABILITY

Due to the simple design of direct action percussion Fuze,The Bomb is capable of functioning at all field conditions.

SHELF LIFE

PACKING

Packing consists of inner and outer packages.The inner package is a HDPE/LDPE carrier No.10C which accommodates two bombs and provides protection during tranport and storage in all climatic conditions. This carrier is then packed a study metallic carrier No.13A which holds two HDPE/LDPE carriers containing four bombs.

STOWAGE DIMENSIONS

Package dimensions            - 460 X 300 X 240 mm holding 4 bombs

Gross weight                  - 28 kg

Volume                        -0.033 Cu.Metres.

HAZARD CASSIFICATION

Compatibility group              : "H"

Hazard division                  : 1.2

Fire fighting classification     : 2

UN NO.                           :0245