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Air-Delivered Bomb
Unpowered munitions dropped from an aerial vehicle, such as a plane or drone. They can be either guided or unguided and range in weight from only a few kilograms to more than 2,000 kilograms — roughly the weight of a car. Heavier air-delivered bombs are among the most destructive munitions in military arsenals.
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Analyst Note:
The arming vane for a nose fuze (painted red) is visible on each of the two leftmost MAB-10B6 air-delivered bombs in this image. As the bomb falls, air passing over the arming vane causes it to spin, arming the fuze. (ARES)
Analyst Note:
The circles in this image indicate where the fixed fin assembly is connected to the bomb body. Fin assemblies such as this help stabilise the bomb as it falls, improving the predictability of the trajectory and thus precision. Fins also orient the bomb as it falls so that munition travels nose-down. Orientation of the bomb on impact can play a role in fuze functioning, as well as the distribution of explosive or other effects. (ARES)
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)
Analyst Note:
The RAFAEL Advanced Defense Systems SPICE 1000 guidance kit is fitted to MK 83-series 1,000-pound unguided air-delivered bombs to convert them to precision guided munitions. Like the JDAM-ER, it has a deployable wings to provide a ‘gliding’ attack trajectory. (ARES)
Analyst Note:
The BLU-117 air-delivered bomb is nearly identical in format to the more common MK 84, but uses the PBXN-109 explosive filler which is more insensitive than the typical explosive compositions found in MK 80-series bombs. The BLU-117 is also coated with a grey, thermally resistant paint, and marked with three yellow bands (as opposed to the green paint with two yellow bands found on standard MK 80-series bombs). These changes were requested by the U.S. Navy for safer storage of these munitions aboard ships. (ARES)
Analyst Note:
The visible component is part of a Joint Direct Attack Munition (JDAM) guidance kit, an accessory package that is fitted to unguided air-delivered bombs to convert them to precision guided munitions. Specifically, this image shows a control fin from the tail assembly. Whilst the JDAM kit would not constitute a munition in its own right, this remnant is included in the OSMP as contextual information strongly suggests it formed part of a complete munition that functioned. (ARES)
2 Analyst Notes:
The JDAM-ER in this photograph is affixed to an unusual pylon thought to be of Ukrainian design, which allows the Western munition to be carried by the Soviet-designed Mikoyan MiG-29 and Sukhoi Su-27 fighter aircraft in service with the Ukrainian Air Force (a MiG-29 is pictured here). (ARES)
3 Analyst Notes:
This is an image released by the Israeli Defense Forces that shows an F-15I of 69 Squadron Israeli Air Force preparing to take part in a high-profile airstrike on 27 September 2024, in which the leader of Hezbollah, Hassan Nasrallah, was killed.
Analyst Note:
The M117 series of air-delivered bombs were historically referred to as ‘demolition bombs’, due to the more substantial blast effect they offer in comparison with so-called ‘general-purpose bombs’. This is achieved through the use of more energetic explosive compositions, such as Tritonal or Minol, which incorporate an oxidiser (typically aluminium powder). Today, munitions using such compositions are sometimes considered in the loose category of ‘enhanced blast munitions’, but the distinction between demolition and general-purpose bombs has largely disappeared. (ARES)
Analyst Note:
Contextual information, including an assessment of the crater which appears to be linked to this munition remnant, suggests that a 2,000-pound-class bomb fitted with a SPICE 2000 guidance kit was used in this airstrike. (ARES)
Analyst Note:
This image shows an Israeli Air Force F-16C fighter aircraft from 101 Squadron carrying a MK 84-series 2,000-pound-class air-delivered bomb fitted with a SPICE 2000 ‘bolt-on’ guidance kit. (ARES)
Analyst Note:
In this image, an F-15C fighter aircraft from 106 Squadron Israeli Air Force is seen carrying two MK 84-series 2,000-pound-class air-delivered bombs fitted with Joint Direct Attack Munition (JDAM) ‘bolt-on’ guidance kits. In U.S. service, this combination is known as the GBU-31. (ARES)
Analyst Note:
The Joint Direct Attack Munition – Extended Range (JDAM-ER) marries the JDAM guidance kit to a ‘glide bomb’ wing kit developed by the Australian Defence Force, offering a munition with at least three times the range of a standard GBU-38 500-pound-class guided aerial bomb. (ARES)
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)
Analyst Note:
This image shows a distinctively shaped component of MBDA’s ‘Diamond Back’ joined tandem wing assembly as fitted to the GBU-39 Small Diameter Bomb (SDB). (ARES)
Analyst Note:
The SPICE family of munitions, manufactured by Israeli aerospace and defence company Rafael, includes two models which use ‘bolt-on’ guidance kits. The SPICE 1000 and SPICE 2000 models convert 1,000- and 2,000-pound unguided aerial bombs, respectively, to precision guided munitions. (ARES)
Analyst Note:
The remnant pictured here is part of a Small Diameter Bomb actuator assembly (‘Tail Actuation Section’), which moves the four tail-fin control surfaces which alter the course of the munition in flight. (ARES)
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)
Analyst Note:
This image depicts an M117-series unguided aerial bomb. Belonging to a class of weapons referred to as ‘demolition bombs’—which use Tritonal or similar explosive compounds to generate a more powerful blast effect than TNT or Composition B—the M117 is an American design which dates to the Korean War era and is rarely seen in service with modern armed forces. (ARES)
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)
Analyst Note:
The various Iranian Qaem-series guided air-delivered bombs can be difficult to differentiate from one another. In this case, the wing (forward fin) assembly distinguishes this Qaem-5 from the visually similar Qaem-1. Note also that the name 'Qaem' has applied by Iran to other, unrelated munitions. (ARES)
Analyst Note:
The MK 84 series of unguided air-delivered bombs can be converted to precision guided munitions by being fitted with guidance kits such as the Joint Direct Attack Munition (JDAM), SPICE 2000, or Paveway series. This MK 84 is also marked with a variant designation “MOD 4”. (ARES)
Analyst Note:
The M-54 ‘high-drag’ series of Soviet/Russian air-delivered bombs can be distinguished by two key identification features: 1.) the ballistic ring located in the forward portion of the bomb (missing in this example); and 2.) the presence of two or four rectangular, longitudinal ‘levelling bars’ (two can be seen in this example). (ARES)
Analyst Note:
Russian air-delivered cluster bombs, such as this one, are often named using a designation that is a compound of the names of the cargo (carrier) bomb and the submunition it carries. For example, this RBK-500 unguided, air-delivered cluster bomb carries 268 PTAB-1M HEAT submunitions, and is thus designated the 'RBK-500 PTAB-1M'. (ARES)
Analyst Note:
This component is one of four pneumatically controlled canards from the guidance section of a Paveway II precision guided munition (PGM) conversion kit. When a Paveway II conversion kit is fitted to a MK 82 series unguided air-delivered bomb (note markings), the munition receives a GBU-12 series designation. (ARES)
Analyst Note:
Although this munition started out life as a mortar projectile of the M492-pattern, it has been modified to be dropped from an unmanned aerial vehicle (UAV) and, in its present state, could not be fired from a conventional mortar. As such, it is correctly classified here as an air-delivered bomb. (ARES)
Analyst Note:
The fin assembly in the image bears a strong resemblance to those of other munitions employed in the same incident that have been identified as M49A2 mortar projectiles modified to be delivered by UAV. (ARES)
