JDAM 'Smart' Bomb

— -- The Joint Direct Attack Munition system converts unguided munitions into "smart" bombs by attaching inertial guidance and satellite-directed global positioning systems.

The JDAM can be put on either the 2,000-pound BLU-109/MK 84 or the 1,000-pound BLU-110/MK 83 warhead, using the tail fins to steer the weapon.

In its most accurate mode, the system has a margin of error of less than 40 feet. Each JDAM costs $21,000 per tailkit.

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JDAM is currently compatible with B-1B, B-2A, B-52H, F-16C/D and F/A-18C/D aircraft. Follow-on integration efforts are currently under way or planned to evaluate compatibility with the A-10 F-15E, F-22, F-117, AV-8B, F-14A/B/D, F/A-18E/F, S-3, and the Joint Strike Fighter.

Primary Function: Guided air-to-surface weapon Contractor: Boeing Corp.Length: (JDAM and warhead) GBU-31 (v) 1/B: 152.7 inches; GBU-31 (v) 3/B: 148.6 inches; GBU-32 (v) 1/B: 119.5 inchesLaunch Weight: (JDAM and warhead) GBU-31 (v) 1/B: 2,036 pounds; GBU-31 (v) 3/B: 2,115 pounds; GBU-32 (v) 1/B: 1,013 pounds Wingspan: GBU-31: 25 inches; GBU-32: 19.6 ins. Range: Up to 15 miles Ceiling: 45,000-plus feet Guidance System: GPS/INS Unit cost: Approximately $21,000 per tailkit Date Deployed: 1999Inventory: The tailkit is in full-rate production. Projected inventory is 87,496 total, 62,000 for the Air Force and 25,496 for the Navy.