Boeing Awarded Contract to Supply GBU-39 A/B SDB I Focused Lethality Munition to U.S. Air Force

Boeing Defense has been awarded a contract by the U.S. Air Force for GBU-39 A/B Small Diameter Bomb I (SDB I) Focused Lethality Munition (FLM) weapon, and single weapon shipping/storage containers.

The undefinitized contract, with not-to-exceed value of around $14 million, was awarded by the U.S. Air Force Life Cycle Management Center (AFLCMC) located at Eglin Air Force Base, Florida. This award is the result of a sole-source acquisition. Fiscal 2018 missile procurement funds in the amount of around $7 million are being obligated at the time of award.

FLM, a derivative of the Small Diameter Bomb, uses a multiphase-blast explosive compound along with a carbon-fiber-composite warhead case to minimize fragmentation, as well as an anti-jam Global Positioning System aided by inertial navigation. Due to this, the bomb can conduct precision engagements with ultra-low collateral damage outside the blast zone.

The contract work will be performed in St. Louis and is expected to be completed by September 2020.

GBU-39 Small Diameter Bomb (SDB) is a 250 lb (110 kg) precision-guided glide bomb that is intended to provide aircraft with the ability to carry a higher number of more accurate bombs.

SDB I is equipped with a GPS-aided inertial navigation system (INS) to attack fixed/stationary targets such as fuel depots, bunkers, etc. The weapon has an operational range of more than 60 nautical miles (110 km) and a circular error probable (CEP) of 5–8 m (16–26 ft).

The SDB carries approximately 38 lb (17 kg) of AFX-757 high explosive. It also has integrated “DiamondBack” type wings which deploy after release, increasing the glide time and therefore the maximum range. Its size and accuracy allow for an effective munition with less collateral damage.

In August 2003, following a two-year competitive phase, the Air Force selected Boeing to develop and build the SDB system. The Boeing and Air Force SDB I Team completed the most successful development program in recent history and delivered the SDB system to the warfighter at cost and ahead of schedule.

The Air Force declared initial operational capability in October 2006, and has been in combat use on the F-15E since October 2006. In January 2012, Boeing produced the 10,000th SDB for the Air Force.

In November 2010, Boeing was awarded a $106 million Lot 7 contract extension from the U.S. Air Force for nearly 2,700 Small Diameter Bomb Increment I (SDB I) munitions and approximately 380 BRU-61 carriages.

Most US Air Force aircraft are able to carry a pack of four SDBs (using the BRU-61/A rack) in place of a single 2,000 lb (907 kg) bomb.

The SDB is currently integrated on the F-15E Strike Eagle, Panavia Tornado, JAS-39 Gripen, F-16 Fighting Falcon, and AC-130W. Future integration is planned for the F-22 Raptor, F-35 Lightning II, A-10 Thunderbolt II, B-1 Lancer, B-2 Spirit, B-52 Stratofortress, and AC-130J. Other aircraft, including UCAVs like the General Atomics Predator C, may also receive the weapon.

Raytheon’s GBU-53/B Small Diameter Bomb II (SDB-II) adds a tri-mode seeker (radar, infrared homing, and semiactive laser guidance) to the INS and GPS guidance of the original SDB.



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