GBU-54 LJDAM

The GBU-54 Laser Joint Direct Attack Munition (LJDAM) was developed following operational requirements identified during Operation Enduring Freedom and Operation Iraqi Freedom for a precision munition capable of engaging moving targets. Testing of the laser guidance enhancement began in fiscal year 2004 to supplement the existing GPS-aided inertial navigation system.

The system utilizes a Precision Laser Guidance Set consisting of a DSU-38/B laser seeker and a wire harness that connects the nose-mounted seeker to the tail kit. This configuration enables dual-mode guidance, allowing the munition to utilize Global Positioning System (GPS) and inertial navigation system (INS) data for mid-course flight while employing the laser seeker for terminal homing. The weapon retains the capability to navigate via GPS/INS alone if the laser signal is lost or unavailable. The GBU-54 is configured for use with the Mark 82 bomb body. The integration of the laser seeker allows the munition to strike high-speed moving targets that are designated by the launch aircraft or other targeting assets.

The GBU-54 made its combat debut in August 2008 in Iraq, where an F-16 from the 77th Fighter Squadron engaged a moving vehicle in Diyala province. It was subsequently deployed in the Afghan theater in October 2010 by the 510th Fighter Squadron. The United States Air Force and United States Navy are the primary operators of the system; full-rate production for naval requirements began in 2012. Germany became the first international customer for the LJDAM following a 2008 contract, with deliveries to the German Air Force starting in 2009. Japan is also an operator of the system. Operational platforms for the GBU-54 include the F-16 Fighting Falcon, F-15E Strike Eagle, and B-52H.