Small Diameter Bomb (SDB)

Staff Sgt. Russell David, 455th Expeditionary Aircraft Maintenance Squadron weapons load crew chief, inspects a GBU-39 Small Diameter Bomb on an F-15E Strike Eagle at Bagram Airfield, Afghanistan. (Air Force photo) (Neg#: 070126-F-0718D-001) The Small Diameter Bomb (SDB) System is the next generation of low-cost and low collateral-damage precision strike weapons for internal and external carriage.

Components and Capabilities

The SDB System comprises the following components: the weapon itself, a four-weapon carriage, a precision inertial navigation system/global positioning system, a mission-planning system, and a logistics-support system.

  • Weapon
    • GBU-39/B: multipurpose, insensitive, penetrating, blast-fragmentation warhead for stationary targets; equipped with deployable wings for extended standoff range
      • Dimensions: (L x W): 70.8" x 7.5" (1.8 m x 19 cm)
      • Weight: 285 pounds (130 kg)
      • Warhead penetration: 3 feet of steel reinforced concrete
      • Fuse: electronic safe/arm fuze (ESAF) cockpit selectable functions, including air burst and delayed options
      • Standoff maximum range: more than 60 nautical miles
    • BRU-61/A "smart" pneumatic carriage
      • Payload capacity: four weapons
      • Weight: 320 pounds (145 kg) empty, 1,460 pounds (664 kg) loaded
      • Dimensions (L x W x H): 143" x 16" x 16" (3.6 m x 40.6 cm x 40.6 cm)
      • Fits nearly all delivery platforms, including internal/external carriages in the F-22A, F-35, Unmanned Combat Air System (UCAS) and B-1 and B-2 bombers
    • Guidance
      • Precision inertial navigation system/global positioning system (INS/GPS)
      • Anti-jam GPS and selective-ability anti-spoofing module (SAASM)

Advantages

The SDB System offers the following advantages over systems that have a single 1,000-pound or 2,000-pound weapon:

  • More targets per sortie (4 weapons per aircraft weapons station)
  • Reduces collateral damage as a result of accuracy and small weapon size
  • Improves pilot/aircrew safety with its extended standoff range

Status

  • Production deliveries started in April 2006 and system is in full rate production
  • Air Combat Command Commander declared initial operational capability for the SDB System on October 2, 2006--fielded ahead of schedule
  • SDB System successfully employed in combat from F-15E Strike Eagles of the 494

For more information on Small Diameter Bomb I (SDB I), read the Small Diameter Bomb Increment I (SDB I) overview.

For more information on Small Diameter Bomb Focused Lethality Munition (SDB FLM), read the Small Diameter Bomb Focused Lethality Munition (SDB FLM) overview.

If you do not have Adobe Acrobat Reader for reading PDF files, it is available for Free from Adobe.

SDB in the News (stories from Air Force Link)

Strike Eagles 'rain thunder' on enemy

Small Diameter Bomb debuts in Afghanistan