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College of Air Warfare. CLUSTER BOMBS. SCOPE. BASIC PRINCIPLE OF OPS - CLUSTER BOMBS. BRIEFLY STUDY THE ARMT UNDER THESE CATEGORIES AVAILABLE IN THE IAF INVENTORY. COMPARE THE BOMBS. FILM - BL 755. NEED – REQUIREMENT. LL ATTACKS ESSENTIAL FOR CLOSE AIR SUPPORT ROLE – NO ALTERNATIVE
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College of Air Warfare CLUSTER BOMBS
SCOPE • BASIC PRINCIPLE OF OPS - CLUSTER BOMBS. • BRIEFLY STUDY THE ARMT UNDER THESE CATEGORIES AVAILABLE IN THE IAF INVENTORY. • COMPARE THE BOMBS. • FILM - BL 755.
NEED – REQUIREMENT • LL ATTACKS ESSENTIAL FOR CLOSE AIR SUPPORT ROLE – NO ALTERNATIVE • RETARDER BOMBS • DELIVERY POSSIBLE FROM LL • SUITABLE FOR LARGE AND STATIC TGTS WHERE LARGE CONC OF HE • INEFFECTIVE AGAINST SMALL TGTS • REQT – WPN TO GIVE HIGH KILL PROB AGAINST SMALL TARGETS
PRINCIPLE OF OPS • PRINCIPLE OF SHOT GUN - CATERS FOR AIMING ERRORS. • PARENT BOMB CONTAINS NUMBER OF SUB-MUNITIONS. • ON RELEASE FROM AC - PARENT BOMB IS RETARDED - EITHER RETARDING FINS OR PARACHUTE. • AFTER ENSURING THAT THE BOMB HAS BEEN SUFFICIENTLY RETARDED - THE SKIN / COVER OF THE PARENT BOMB IS EXTRACTED / PEELED OFF.
PRINCIPLE OF OPS • AFTER ENSURING THAT THE SKIN IS PEELED OFF - SUB-MUNITIONS ARE EXTRACTED. • EACH SUB-MUNITION AFTER EXTRACTION IS SEPARATELY RETARDED. • EACH SUB-MUNITION FUNCTIONS INDEPENDENTLY AFTER HITTING THE TARGET. • TYPE OF WARHEAD IN THE SUB-MUNITION - ANTIPERSONNEL OR ANTI-TANK OR RUNWAY PENETRATION.
BL 755 • DESIGNED TO CARRY 147 DUAL – PURPOSE / GP BOMBLETS. • DESIGN. A GAS OPERATED SYSTEM WHEN ACTIVATED • SPLIT THE OUTER CASING INTO TWO PARTS. • EJECTED THE BOMBLETS AT VARYING TIMES AND VELOCITIES.
BL 755 • DUAL PURPOSE CLUSTER BOMB • M/S HUNTING ENGG • TWO VERSIONS PROGRESSIVELY DEVELOPED • BL 755 No 1- GP CLUSTER BOMB • BL 755 No 2- ADVANCED ANTI ARMOUR (AAA)
LEADING PARTICULARS • WEIGHT OF BOMB : 277 ± 5 KG • NUMBER OF BOMBLETS : 147 • WEIGHT OF EACH BOMBLET : 1KG APPX. • FILLING OF BOMBLET : RDX/TNT • WEIGHT OF FILLING : 228 GMS • USED ON MIG 21, 23 AND JAGUAR AC DAMAGE AREA :10000 SQM
BL-755 SAFU INFLATABLE BAG AIR ARMING VANE • NOSE SECTION. • ARMING VANE • SAFETY ARMING & FUNCTIONING UNIT • BREECH & VALVE ASSEMBLY • LEAD ELECTRICAL FUZE ARMING
BL-755 INFLATABLE BAG SAFU AIR ARMING VANE • CENTRE SECTION. • GAS TUBE • GAS DISTRIBUTION BLOCKS • INFLATABLE BAGS • BOMBLETS • TAIL SECTION • FINS FOR RETARDING THE BOMB
SAFETY ARMING AND FUNCTIONING UNIT (SAFU) • LOCATED IN THE BOMB NOSE. • INITIATES FIRING SEQUENCE WHICH RELEASES THE BOMB SKIN AND EJECTS BOMBLETS. • FOUR TIME DELAY SETTINGS- .08, .8, .94, 1.13 sec. • CONDITIONS TO BE SATISFIED. • LIVE RELEASE HAS BEEN SELECTED BY PARENT AC. • AFTER SPECIFIED DELAY SETTING. • ARMING VANE ROTATES AT SPECIFIED RPM.
SAFU - COMPONENTS • GAS MOTOR ASSY- SEALED X – RELEASES SAFETY DEVICE • CLUTCH AND DRUM ASSY – COUPLED TO ARMING VANE • STRIKER ASSY • TIMER ASSY – DELAY FIRING OF PRIMARY CARTRIDGE • TRIGGER ASSY
GAS SYSTEM • THROUGH TWO CARTRIDGES LOCATED IN BREECH AND VALVE ASSY • BREECH AND VALVE ASSY • ROUTES GAS FLOW FROM PRIMARY CARTRIDGE – UNLATCHING/LIFT OF SKIN • ROUTES GAS FLOW FROM SECONDARY CARTRIDGE TO EJECT BOMBLETS • GAS DISTRIBUTION BLOCKS • GAS TUBE – MOVES REARWARDS AND CONVEYS GASES FROM SEC CARTRIDGE TO GAS DISTRIBUTION BLOCKS
CENTRE SECTION • BOMBLETS • 147 BOMBLETS ARRANGED IN 7 BAYS • EACH BAY HAVING 7 SECTIONS • EACH SECTION HAVING THREE BOMBLETS • EACH SECTION HAS ONE INFLATABLE BAG – 49 BAGS IN TOTAL • VEL OF GASES AND INFLATION RATE OF BAGS IS CONTROLLED • 2,4,6 SECTIONS HAVE HIGH GAS FLOW – EJECTED FIRST • 1,3,5,7 SECTIONS HAVE LOW GAS FLOW – EJECTED LATE
BL-755 1. AFTER RELEASE, STABILISING FINS EXTEND AND THE BOMB FOLLOWS A NORMAL BALLISTIC TRAJECTORY. 2. AFTER A SELECTED TIME DELAY THE OUTER CASING IS SPLIT INTO TWO BY GAS PRESSURE FROM A PRIMARY CARTRIDGE.
BL-755 3. ONCE THE BODY CASE HAS OPENED THE MAIN GAS CARTRIDGE IS ACTIVATED AND ITS PRESSURE EJECTS THE BOMBLETS.
OPERATION • BOMBLET EJECTION VELOCITY IS VARIED BETWEEN BAYS TO ENSURE EVEN GROUND COVER. • EACH BOMBLET IS ARMED AFTER A SHORT PERIOD OF FLIGHT AND ON IMPACT THE SHAPED CHARGE PENETRATES THE ARMOUR – 25 CM PENETRATION. • IN ADDITION TO ITS ANTI-ARMOUR CAPABILITY EACH BOMBLET CASING DISINTEGRATES INTO 2000(1850 MT/S) FRAGMENTS WHICH ARE EFFECTIVE AGAINST NON-ARMOURED TARGETS AND PERSONNEL. • PIEZO ELECTRIC FUSE – FUSE ARMED ONLY WHEN TAIL IS DEPLOYED – FIVE ROTATIONS
BME 330 CLUSTER BOMB • MANUFACTERED BY EXPAL COMPANY OF SPAIN. • MIG-23,MIG-27 AND JAGUAR AIRCRAFT. • RELEASE POSSIBLE AT 30 MTS • WEIGHT - 320kgs • NUMBER OF BOMBLET - 180 • WT. OF EACH BOMBLET - 0.800kgs • BOMB EFFICIENCY 95% • BOMBLET EFFICIENCY 80% • 20 % BOMBLETS MAY/MAY NOT WORK
BME-330 NOSE CONTAINER • IT CONSTITUTES THE FRONTAL END OF THE CYLINDRICAL SKIN AND HOUSES THE TWIN FUZE SYSTEM AND ELECTRONIC UNIT • THIS ELECTRONIC UNIT SUPPLIES ELECTRICAL POWER THROUGH FUZE TO DE-SKINNING OF BODY AND TO THE PYROCARTRIDGE FOR SCATTERING OF BOMBLETS. MAIN BODY • MAIN BODY HOUSES THE CLUSTER FRAME WHERE BOMBLETS ARE STORED IN NINE LAYERS EACH LAYER CONTAINS TWENTY BOMBLETS.IT ALSO CONTAINS THE DE-SKINNING SYSTEM AND THE SCATTERING SYSTEM FOR BOMBLETS DISPERSION. TAIL UNIT • STABILISES THE BOMB AFTER RELEASE.IT HOUSES A PARACHUTE ASSEMBLY HELD TO THE BOMB WITH THE HELP OF HOLDING DEVICE.
BOMBLETS • 180 BOMBLETS. • TWO TYPES - ANTI PERSONNEL AND ANTI ARMOUR. • MIX - FACTORY SET AND CANNOT BE REARRANGED. • SEPARATE PARACHUTE PROVIDED FOR EACH BOMBLET. • THREE TYPES OF PARACHUTES USED HAVING VARYING CANOPY AREA - SMALL , MEDIUM AND LARGE. • FIRST THREE LAYERS HAVE SMALL PCHUTES • LAST THREE LAYERS HAVE LARGE PCHUTES • INDIVIDUAL FUZE.
BLG - 66 • AFTER RELEASE THE BOMB IS RETARDED BY PARACHUTE • CENTRAL TUBE IS THEN WITHDRAWN BY THE PARACHUTE • THIS ACTUATES THE PYROTECHNIC CHARGES OF EACH RING OF GRENADES • GRENADES ARE RELEASED BY RINGS TO PROVIDE CONSISTENT PATTERN • GRENADES ARE ALSO INDIVIDUALLY RETARDED • TWO RELEASE PATTERNS • LONG CARPET – 40 x 240 MTS • SHORT CARPET – 40 x 120 MTS
CLUSTER BOMBS • SECOND METHOD - BOMB HELD ON TO THE AC - SUB-MUNITIONS DISPENSED DIRECTLY FROM THE BOMB ITSELF. – EXAMPLE JP 233.
JP 233 • BRITISH CLUSTER BOMB - TWO TYPES OF SUB-MUNITIONS • VERY HEAVY WEAPON – 2335 KG ; 5 TIMES EFFECTIVE • HB 876 - AREA DENIAL MINES - 215 CAN BE CARRIED IN ONE MODULE • WT 2 .4 KG - BLAST FRAGMENTATION WARHEAD. • ON IMPACT WITH GROUND IT STANDS UP ON ITS VANES - RANDOM SELF DESTRUCTION FUZE. • BURST EITHER BY LOCAL DISTURBANCE OR DELAY FUSE • WARHEAD ON DETONATION CAN PERFORATE STEEL
JP 233 • SG 357 • RUNWAY PENETRATION WEAPONS • 30 WPNS CARRIED IN ONE MODULE • BRAKING AFTER RELEASE BY P’CHUTE – PROGRESSIVELY GET VERTICAL • TWO WARHEADS • FIRST – SHAPED CHARGE WHICH PUNCHES A HOLE THRO WHICH SECONDARY CHARGE IS FIRED • SECONDARY CHARGE FIRES WELL BELOW SURFACE – CRATERING HEAVY • JP 233 HAS REUSABLE MODULE