Oh, I understand the gizmo factor. That's why I like them so much. Here are some photos of loading dummies of the GBU-39 SDB that I took last Summer, and a few from the net or the real thing, and some computer graphics. Even though they are so tiny they have the penetration of a BLU-109.
Info from the net:
"The Small Diameter Bomb system includes two variants of the Small Diameter Bomb, a bomb carriage system, a mission planning system and logistics support. The GBU-39 variant of the 250-pound class bomb is equipped with an INS/GPS guidance system suitable for fixed and stationary targets. The GBU-40 second variant adds a terminal seeker with automatic target recognition capabilities more suitable for mobile and relocatable targets.
At just 5.9 feet long and 285 pounds, the bomb's small size increases the number of weapons an aircraft can carry, therefore raising the amount of targets it can kill in one sortie. Because of its size and precision accuracy, it also reduces collateral, or unintended, damage in the target vicinity. In the urban conflict in Iraq, the warfighter struggles at times to find a weapon that gives them a desired effect on a target without an excessive effect, so the small diameter bomb will be a nice addition. Complementing the weapon is a smart miniature munitions carriage system. This system can carry four small diameter bombs, enabling an aircraft to quadruple its load out. The carriage system functions similar to an aircraft stores management system by communicating with and controlling up to four weapons.
A small diameter bomb can be used in adverse weather and has a standoff range of more than 60 nautical miles. Once released, the weapon uses its inertial navigation and an anti-jam Global Positioning System to fly to the target. Its guidance is further augmented by a differential GPS system, which provides corrections to enhance accuracy.The Small Diameter Bomb system includes two variants of the Small Diameter Bomb, a bomb carriage system, a mission planning system and logistics support. The GBU-39 variant of the 250-pound class bomb is equipped with an INS/GPS guidance system suitable for fixed and stationary targets. The GBU-40 second variant adds a terminal seeker with automatic target recognition capabilities more suitable for mobile and relocatable targets.
At just 5.9 feet long and 285 pounds, the bomb's small size increases the number of weapons an aircraft can carry, therefore raising the amount of targets it can kill in one sortie. Because of its size and precision accuracy, it also reduces collateral, or unintended, damage in the target vicinity. In the urban conflict in Iraq, the warfighter struggles at times to find a weapon that gives them a desired effect on a target without an excessive effect, so the small diameter bomb will be a nice addition. Complementing the weapon is a smart miniature munitions carriage system. This system can carry four small diameter bombs, enabling an aircraft to quadruple its load out. The carriage system functions similar to an aircraft stores management system by communicating with and controlling up to four weapons.
A small diameter bomb can be used in adverse weather and has a standoff range of more than 60 nautical miles. Once released, the weapon uses its inertial navigation and an anti-jam Global Positioning System to fly to the target. Its guidance is further augmented by a differential GPS system, which provides corrections to enhance accuracy."