Joint Direct Attack Munition (JDAM)

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Product Type:

Gravity Bomb Guidance Kit

Using Service (US):

Air Force (USAF) and Navy

Program Status:

In Full Rate Production (FRP)

Prime Contractor:

The Boeing Company - St. Charles, MO

The GBU-31/32/38 JDAM

About JDAM:

Joint Direct Attack Munition (JDAM) is a low-cost gravity bomb guidance kit manufactured by Boeing. It converts existing unguided General Purpose Bombs into accurately guided smart weapons. JDAMs can be launched from a distance of more than 17 miles (28 km) from the target and receives updates from U.S. Air Force GPS satellites to help guide the weapon to the target. Boeing builds JDAM weapons at the company's St. Charles, Missouri facility.

The JDAM guidance kit uses either the 2,000-pound BLU-109/Mk 84 (GBU-31 JDAM), the 1,000-pound BLU-110/Mk 83 (GBU-32 JDAM) or the 500-pound BLU-111/Mk 82 (GBU-38 JDAM) warhead as payload. The Air Force is developing the BLU-137 which is a modernized warhead penetrator to replace the BLU-109. This new warhead uses a modified JDAM tail kit hardback assembly to include an Arming Generator Relocator Adaptor (AGRA). JDAM enables employment of accurate air-to-surface weapons against high priority fixed and relocatable targets from fighter and bomber aircraft. Guidance is facilitated through a tail control system and a GPS-aided Inertial Navigation System (INS). The navigation system is initialized by transfer alignment from the aircraft that provides position and velocity vectors from aircraft systems. Body strakes provide additional stability and lift.

Once released from the aircraft, the JDAM autonomously navigates to the designated target coordinates. Target coordinates can be loaded into the aircraft before takeoff, manually altered by the aircrew before weapon release, or automatically entered through target designation with onboard aircraft sensors. In its most accurate mode, the JDAM system will provide a weapon Circular Error Probable (CEP) of 16.4 feet (5.0 m) or less during free flight when GPS data is available. If GPS data is denied, the JDAM will achieve a 98 feet (30.0 m) CEP or less for free flight times of up to 100 seconds with a GPS quality handoff from the aircraft. JDAM can be launched from very-low to very-high altitudes in a dive, toss or loft and in straight and level flight with an on-axis or off-axis delivery. JDAM enables multiple weapons to be directed against single or multiple targets on a single pass.

The JDAM production team includes Honeywell (inertial measurement unit), Rockwell Collins (GPS receiver), Textron (tail actuator subsystem), Lockheed Martin Corporation (mission computer), Lockely (tail fairing), Enser and Eagle-Picher (battery), and Stremel (strakes and cable cover).

Since Boeing started the production of JDAM in 1998, thousands of guidance kits have been delivered. On August 20, 2013, Boeing announced the production of its 250,000th JDAM kit.

In September 2012, Boeing announced that a new JDAM variant, the GBU-54 500-pound Laser JDAM, had entered full rate production (FRP). Boeing delivered the first production laser kits to the U.S. military in 2008, and the Air Force employed them in combat that same year.

Boeing is currently developing and testing a JDAM Extended Range or JDAM ER variant, which incorporates a low-cost wing and extends the JDAM standoff range to more than 40 miles (64 km). The Royal Australian Air Force became Boeing's first JDAM ER customer in 2011. On March 13, 2013, Boeing announced the selection of Australia-based Ferra Engineering to build wing kits for the JDAM ER.


JDAM is integrated on the B-52H Stratofortress, B-1B Lancer, B-2A Spirit, A-10C Thunderbolt II, the AV-8B Harrier II, F-22A Raptor, F-15E Strike Eagle; all variants of the F-16 Fighting Falcon, the F/A-18A+/C/D Hornet and F/A-18E/F Super Hornet. Integration is currently in progress on the F-35 Lightning II and MQ-9 Reaper.

JDAM Production Forecast:

A 15-year JDAM production forecast is available through Forecast International's Platinum Forecast System, which includes a breakout of total market unit and value statistics by manufacturer and end-user. This real-time service also includes information on all prime and subcontractors, contract awards, worldwide inventories, a complete program history, and a rationale detailing the outlook of the program. A 10-year JDAM production forecast is also available in report format through Forecast International's Ordnance & Munitions Forecast service.


JDAM is a joint U.S. Air Force and Navy program led by the Air Force. JDAM improves the existing inventory of general purpose gravity bombs by integrating a Global Positioning System (GPS)/Inertial Navigation System (INS) guidance capability that improves accuracy and adverse weather capability. The program enhances DoD conventional strike system capabilities by providing the ability to precisely attack time-critical, high value fixed or maritime targets under adverse environmental conditions and from all altitudes.

FY 2020 & FY 2021 - JDAM DoD Program:

This data is available in Forecast International's U.S. Defense Budget Forecast, a comprehensive analytical database containing historical and forecast budget figures, year-to-year funding comparisons, congressional budget markups, program justification documents, and much more.

Source: U.S. Department of Defense (DoD) and The Boeing Company

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