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The GBU-39 Small Diameter Bomb (SDB) is a precision-guided aerial bomb in the 250-pound weight class, developed and predominantly produced in the United States.
GBU-39 series
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GBU-39 series
The GBU-39 Small Diameter Bomb (SDB) is a precision-guided aerial bomb in the 250-pound weight class, developed and predominantly produced in the United States. The GBU-39 has been produced in several variants with differing warhead configurations, most containing 16–17 kg of explosive composition - a relatively small 'payload' for an air-delivered bomb. The weapon is fitted with a wing assembly that permits longer, flatter ‘gliding’ attack vectors - giving it a range of more than 110 km from the release point. It has four tail-fin control surfaces to adjust the munition’s trajectory in flight in response to GPS and inertial guidance, thus improving precision.
OSMP820
Air-Delivered Bomb Lebanon GBU-39 series
Analyst Note:
Labels on munition remnants can provide a host of useful data, including the model designation (in this case, “GBU-39/B”), part number (PN; (“70P998100-1003”), National Stock Number (NSN; “1325-01-526-8728”), serial number (SN; illegible), and Department of Defense Identification Code (DODIC; “EC53”). These codes, and others like them, can often be searched for in databases or provided to technical specialists for further interpretation. (ARES)
OSMP696
Air-Delivered Bomb Ukraine GBU-39 series
Analyst Note:
In this image, two GBU-39 Small Diameter Bombs are attached to a BRU-61/A bomb rack. The Ukrainian Air Force adapted this American-designed bomb rack to fit their Soviet-designed Mikoyan MiG-29 fighter aircraft. The BRU-61/A can carry up to four GBU-39 air-delivered bombs. (ARES)
OSMP554
Air-Delivered Bomb Palestinian Territories GBU-39 series
Analyst Note:
The circled remnant is the hardened steel nosecone of the GBU-39, which renders the munition capable of penetrating more than 3 feet (approx. 1 metre) of steel-reinforced concrete. It is one of several components that often survives the detonation of the munition. (ARES)
OSMP537
Air-Delivered Bomb Palestinian Territories GBU-39 series
2 Analyst Notes:
This munition is assessed to be one of the Small Diameter Bomb (SDB) I variants (GBU-39 series), rather than one of the SDB II 'StormBreaker' (GBU-53 series) munitions, on the basis of contextual information. 'Small Diameter Bomb' is the manufacturer's terminology, whilst 'GBU-39' is the U.S. Air Force designation (also used by many other operators). (ARES)