BLU-109B/B Hard Target Penetrator Bomb

Length:	7.9 ft (2.4 m)
Diameter:	14.6 in (370 mm)
Weight:	1,927 lbs (874 kg)
Filling:	530 lbs (240 Kg) of Tritonal

The BLU-109/B Hard Target Penetrator bomb was based on the design of the MK84 General Purpose Bomb to be used on the GBU-24B/B Paveway III Low Level Laser Guided Bomb. The BLU-109 was first made available in 1985.

The bomb body is made from forged gun-barrel steel, making it more resistant to impact against hard targets thus reducing the chance of the bomb body breaking apart. Compairing the differences between the BLU-109 and the MK84, here are the following improvements: no nose fuze well (cavity) thus stronger nose for penetration, the thickness of the BLU-109's body is at least an inch thick vice half-inch thick for the MK84, and last but not least the base plate where the fuze is located has been reinforced to sustain the shock of impact.

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