The nominal diameter of a projectile. For most modern munitions, this is expressed in millimetres (e.g. 82 mm mortar projectile), but older artillery gun projectiles may be described in inches.
Munitions that are delivered from above the surface of the earth, typically from an aerial vehicle, and designed to strike surface-based targets — whether on land or at sea.
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)
The AGM-179 Joint Air-to-Ground Missile (JAGM) is derived from the AGM-114 Hellfire series of air-to-surface missiles—and thus shares physical characteristics in terms of general construction, including rear fin placement. The marked weight of 52.0 kg (115 lbs) is generally believed to be an indicator that the rocket motor is from a JAGM; however, remnants marked with this weight have been observed from several years before the JAGM was initially fielded. (ARES)
In this image, four AGM-114 Hellfire-series missiles can be seen fitted to an M299-series missile launcher, itself attached to the stub wings of this Israeli AH-64 Apache helicopter. In theory, the Apache could be armed with up to sixteen Hellfire missiles, but fewer are carried in practice to allow for other weapons and sensor payloads (ARES).
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)
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)
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)
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)
This image shows a component believed to be part of the folding-blade assembly used in the AGM-114R-9X variant of the Hellfire missile. Blades are used in place of an explosive payload to create a kinetic weapon that achieves a practical level of lethality whilst minimising collateral harm. (ARES)
Little is known with certainty about the AGM-114-R9X variant of the Hellfire missile, although it has been associated with high-profile targeted killings including those of senior al-Qaeda figures. The weapon functions as a kinetic-impact munition, using pop-out blades—rather than an explosive warhead—to reduce the prospects of collateral harm. (ARES)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
