F-22 and GBU-39 Small Diameter Bomb

F-22 SDB. Courtesy Video | Air Force News | Date: . Upgrading the weapons capabilities of the F-22 Raptor. Hosted by Staff Sgt. Chris Decker. The GBU-39 Small Diameter Bomb (SDB) is a 250 lb precision-guided glide bomb that provides aircraft with ability to carry a higher number of bombs. Most U.S. Air Force aircraft will be able to carry (using the BRU-61/A rack) four SDBs in place of a single 2,000 pounds (910 kg) bomb. The initial SDB is expected to be replaced with the Small Diameter Bomb