Russian FAB bombs: from 500 kg to 3 tons against Ukrainian positions
Russian FAB-1500 bombs are flattening bunkers in Kharkiv: glide bombs of up to 3 tons with limited guidance. What are they and how are they being used in Ukraine?
English · Original discussion in Spanish · Published
Russian FAB bombs: from 500 kg to 3 tons against Ukrainian positions
Russian forces have stepped up their use of FAB-series aerial bombs in the Kharkiv region, according to information circulating on military channels. These are guided glide bombs which, in their heaviest versions, can exceed three tons in total weight. The FAB-1500 munition is being used to neutralize fortified positions, while the 500 kg versions are aimed at trenches and observation posts in open terrain.
The technical discussion reveals key details: the original FAB bombs were free-fall and unguided, but modern versions incorporate glide kits that allow them to hit targets with precision. The 3000 kg version exists but does not yet have a guidance system, or at least none has been shown publicly. This limits its use to heavy bombers such as the Tu-95, which are more vulnerable to air defenses.
What exactly are FAB bombs?
FAB is the Russian acronym for "high-explosive aerial bomb." The number in their designation (250, 500, 1500, 3000) does not indicate the net explosive charge, but the total weight of the munition, including the steel casing. In other words, a FAB-1500 carries less than 1500 kg of explosive; a significant portion is metal that, upon detonation, produces shrapnel. Their effect on bunkers and buried positions is devastating.
Tactical use: from the FAB-500 to the FAB-3000
At the front, FAB-500s are used to pound trenches and wooded areas, while FAB-1500s are reserved for better-protected targets. Some sources suggest these bombs are dropped when Ukrainian drone operators are detected, although there is no official confirmation. The lack of guidance in the larger versions (FAB-3000) makes them less accurate, but their destructive power is overwhelming.
What is clear is that Russian aviation has an arsenal of glide bombs which, despite their Soviet origins, are being modernized with simple but effective guidance systems. The trench war in Ukraine is also becoming a testing ground for free-fall bombs converted into precision munitions. The available data suggest that, for now, Ukrainian air defenses have not found an effective response against this type of threat launched from aircraft operating beyond the reach of portable systems.
Russian forces have stepped up their use of FAB-series aerial bombs in the Kharkiv region, according to information circulating on military channels. These are guided glide bombs which, in their heaviest versions, can exceed three tons in total weight. The FAB-1500 munition is being used to neutralize fortified positions, while the 500 kg versions are aimed at trenches and observation posts in open terrain.
The technical discussion reveals key details: the original FAB bombs were free-fall and unguided, but modern versions incorporate glide kits that allow them to hit targets with precision. The 3000 kg version exists but does not yet have a guidance system, or at least none has been shown publicly. This limits its use to heavy bombers such as the Tu-95, which are more vulnerable to air defenses.
What exactly are FAB bombs?
FAB is the Russian acronym for "high-explosive aerial bomb." The number in their designation (250, 500, 1500, 3000) does not indicate the net explosive charge, but the total weight of the munition, including the steel casing. In other words, a FAB-1500 carries less than 1500 kg of explosive; a significant portion is metal that, upon detonation, produces shrapnel. Their effect on bunkers and buried positions is devastating.
Tactical use: from the FAB-500 to the FAB-3000
At the front, FAB-500s are used to pound trenches and wooded areas, while FAB-1500s are reserved for better-protected targets. Some sources suggest these bombs are dropped when Ukrainian drone operators are detected, although there is no official confirmation. The lack of guidance in the larger versions (FAB-3000) makes them less accurate, but their destructive power is overwhelming.
What is clear is that Russian aviation has an arsenal of glide bombs which, despite their Soviet origins, are being modernized with simple but effective guidance systems. The trench war in Ukraine is also becoming a testing ground for free-fall bombs converted into precision munitions. The available data suggest that, for now, Ukrainian air defenses have not found an effective response against this type of threat launched from aircraft operating beyond the reach of portable systems.
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Summary of a discussion on Burbuja.info - Foro de economía, actualidad y política., translated from Spanish and reviewed before publication. Read the full discussion (31 replies).
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