GBU-28
Encyclopedia : G : GB : GBU : GBU-28
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| GBU-28 | |
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| Primary Function: | 5,000 pound (2,273 kg) unpowered, hard target laser guided weapon |
| Length: | 25 ft (7.6 m) |
| Diameter: | 2 ft 4 in (711 mm) |
| Wingspan: | 5 ft 5 in (1.7 m) |
| Range: | More than 5 nautical miles (9 km) |
The Guided Bomb Unit 28 is a 5,000 pound laser-guided "bunker busting" bomb. It was specifically developed for US Military use in Operation Desert Storm to penetrate hardened Iraqi command centres located deep under ground. However, only two of these weapons were dropped in Desert Storm, both by F-111Fs.
GBU-28's are modified 8" artillery barrels, weight 4,700 pounds, and contain 630 pounds of high explosives. The operator illuminates a target with a laser designator and then the munition guides to a spot of laser energy reflected from the target.
The bomb underwent critical testing in Nevada at the Tonopah Test Range, a major test facility for DOE funded weapon programs. It proved capable of penetrating over 30 metres (100 feet) of earth or 6 metres (20 feet) of solid concrete.[link]
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