Bunker buster Guide, Meaning , Facts, Information and Description
A Bunker buster bomb is an designed to penetrate hardened targets or targets burred deep underground.
In World War II the British designer Barnes Wallis of Bouncing bomb fame, designed two bunker buster bombs. The five tonne Tallboy bomb and the ten tonne Grand Slam (Earthquake) bomb. The designs were very aerodynamic with a tail which caused them to spin. This allowed them to break the sound barrier as they fell from a height of 22,000 feet. They had a much thicker skin than the typical World War II bomb so that they would survive the impact of hitting a hardened surface.
In the First Gulf War (1990-1991) there was a need for deep penetration bomb similar to the British weapons of World War II, but none of the NATO air forces had such a weapon. The US made one by using old 4 inch gun barrels, filling them with explosives and putting tails on them. They were designated "Guided Bomb Unit-28 (GBU-28)". They worked very effectively.
More recently the US has developed a series of custom made bombs to penetrate hardened or deeply buried structures:
Aircraft delivered bombs
| Depth of Penetration | War head designation | Weapon Systems |
| Pentration of reinforced concrete: 1.8 m (6 ft) | BLU-109 Penetrator (Mark 84 bomb) | GBU-10, GBU-15, GBU-24, GBU-27, AGM-130 |
| Pentration of reinforced concrete: 3.4 m (11 ft) | BLU-116 Advanced Unitary Penetrator (AUP) | GBU-15, GBU-24, GBU-27, AGM-130 |
| Pentration of reinforced concrete: 3.4 m (11 ft) | BLU-118/B Thermobaric Warhead | GBU-15, GBU-24, AGM-130 |
| Pentration of reinforced concrete: more than 6 m (20 ft) | BLU-113 Super Penetrator | GBU-28, GBU-37 |
The rocket motor in missiles can be used to drive a hardened war head deep into a structure.
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