



| Name / Designation | JDAM Bunker Buster (BLU-109/BLU-122 JDAM) |
| Type | Precision-Guided Bomb |
| Manufacturer | Boeing (JDAM kit), General Dynamics (bomb body) |
| Country of Origin | United States |
| Year Introduced | 1999 |
| Operational Status | Active |
| Weight | Approx. 2,000 lb (907 kg) |
| Length | Approx. 3.9 m |
| Diameter | 0.37 m |
| Casing Type | Hardened steel penetrator casing |
| Yield | Conventional high explosive |
| Guidance | GPS / INS guidance |
| Accuracy (CEP) | About 5 meters |
| Delivery Platforms | Strategic bombers and fighter aircraft |
| Penetration Capability | Up to 1.8–2.4 meters of reinforced concrete |
| Warhead Type | High explosive penetrator |
| Fuzing Options | Delay, impact, programmable |
| Explosive Composition | Tritonal or PBXN-109 |
| Primary Mission | Destruction of bunkers and hardened structures |
| Operators | United States and allied air forces |
| Notable Deployments / History | Used in Iraq, Afghanistan, and Middle East strike operations |
| Variants | GBU-31(V)3/B (BLU-109), GBU-31(V)4/B (BLU-122), GBU-31 JDAM series |
The Bunker Buster JDAM (Joint Direct Attack Munition) is a precision-guided bomb designed to destroy hardened and deeply buried targets such as underground bunkers, command centers, and fortified facilities. By combining a hardened penetrator bomb body with the JDAM guidance kit, the weapon provides all-weather, high-accuracy strike capability for modern air forces.
The system converts conventional unguided bombs into smart munitions by adding a GPS and inertial navigation system guidance package. This allows aircraft to strike targets with a high level of accuracy even in poor weather or low visibility conditions. Bunker buster JDAM variants are typically based on heavy penetrator bombs such as the BLU-109 or BLU-122 warheads, which are specifically designed to penetrate reinforced concrete before detonation.
These weapons are commonly carried by strategic bombers and tactical fighter aircraft including the B-1B, B-2 Spirit, B-52H, F-15E, F-16, and F-35. Their ability to strike hardened targets with precision makes them a key component of modern U.S. airpower.
The JDAM guidance kit is manufactured by Boeing in the United States. The penetrator bomb bodies used with bunker buster JDAM variants are produced by various U.S. defense contractors, including General Dynamics Ordnance and Tactical Systems.
Development of the JDAM system began in the 1990s to provide the U.S. military with a low-cost precision strike capability. Since entering service in 1999, JDAM has become one of the most widely used precision munitions in the U.S. arsenal.
The bunker buster JDAM is not a powered weapon. Instead, it is released from an aircraft and glides toward its target using aerodynamic control surfaces.
Depending on release altitude and aircraft speed, the weapon typically has a range of about 15 to 28 kilometers (9 to 17 miles). Accuracy is extremely high, with a circular error probable of roughly 5 meters when GPS guidance is available.
JDAM guidance kits are relatively inexpensive compared with other precision weapons. A typical kit costs approximately $25,000 to $35,000 depending on configuration and production batch. When combined with a penetrator bomb body such as the BLU-109, the total cost of a bunker buster JDAM weapon system is usually estimated between $40,000 and $70,000 per unit.
It is designed to destroy hardened underground structures such as bunkers, command centers, and fortified facilities.
With GPS guidance, accuracy is typically about 5 meters CEP.
Aircraft such as the B-1B, B-2, B-52, F-15E, F-16, and F-35 can deploy them.
Depending on the variant, it can penetrate roughly 2 meters of reinforced concrete before detonating.
Compared with cruise missiles, it is relatively inexpensive, usually costing tens of thousands of dollars per unit.
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