MGM-140 ATACMS

MGM-140 ATACMS
U.S. Army Acquisition Support Center · Public domain · source
Name	MGM-140 ATACMS
Origin	United States
Type	Surface-to-surface missile
Manufacturer	Lockheed Martin
In service	1991–present
Weight	Variable
Length	Variable
Diameter	610 mm
Speed	Supersonic
Vehicle range	Up to 300 km (variants)
Filling	Unitary or submunitions
Guidance	Inertial navigation, GPS, terminal sensors

MGM-140 ATACMS is a family of tactical surface-to-surface missiles developed in the late Cold War and fielded by the United States Army and allied armed forces. Designed to provide long-range precision fires complementary to tube artillery and multiple-rocket systems, it integrates technologies from programs including Tomahawk (missile), Patriot (missile), MLRS, and projects led by United States Army Research Laboratory. The system has been produced and supported by Lockheed Martin, Pratt & Whitney, and subcontractors tied to the Defense Advanced Research Projects Agency and Sandia National Laboratories.

Development and Design

Development began from concepts explored by United States Army Artillery Branch planners in the 1970s and programs initiated under the Guided Multiple Launch Rocket System effort and the Multiple Launch Rocket System modernization of the 1980s. Prime contractor Martin Marietta (later Lockheed Martin) and subcontractors such as Boeing Defense, Raytheon Technologies, and General Dynamics advanced propulsion, aerodynamics, and guidance derived from the AGM-86 ALCM and BGM-109 Tomahawk programs. The design emphasizes compatibility with the M270 MLRS and M142 HIMARS launchers, enabling rapid reload and integration with fire-control suites used by United States Army Fire Support cells and NATO allies including United Kingdom Ministry of Defence and German Bundeswehr command systems. Key stakeholders included the Office of the Under Secretary of Defense for Acquisition and Sustainment, U.S. Army Training and Doctrine Command, and congressional appropriators overseeing the Defense Authorization Act allocations. The airframe uses composite materials developed in cooperation with DuPont and Northrop Grumman material scientists; propulsion improvements were validated at White Sands Missile Range and Eglin Air Force Base test ranges.

Variants and Specifications

Multiple production blocks and export variants were produced to meet different operational requirements. Early production blocks replaced unitary warheads with submunitions similar to those considered in Pershing II and contemporary theater systems. Notable variants include the short-range ATACMS Block I commonly integrated on HIMARS launchers, the extended-range Block II influenced by research from Strategic Defense Initiative-era contractors, and later Precision Strike Missile concept adaptations aligned with Long Range Precision Fires modernization. Specifications vary: payload mass, range (from approximately 165 km to about 300 km), missile length, and guidance packages differ across blocks produced at Lockheed Martin Huntsville and assembled with propulsion components from Aerojet Rocketdyne. Warhead options mirror trade-offs seen in General Dynamics M39 and MGM-31 Pershing programs: unitary high-explosive, cluster munitions, and sensor-fused munitions; these options influenced policy debates in bodies such as the United Nations General Assembly and offices like the Under Secretary of Defense for Policy.

Guidance and Warhead Systems

Guidance systems evolved from solely inertial navigation systems (INS) to integrated INS with Global Positioning System updates, employing receiver technology tied to programs sponsored by U.S. Air Force Space Command and commercial GPS industrial partners. Terminal guidance packages in later blocks incorporated seeker technologies developed with input from Defense Advanced Research Projects Agency initiatives and sensor firms like Honeywell International. Warhead systems ranged from a single 450 kg unitary high-explosive charge to cluster configurations carrying hundreds of submunitions reminiscent of designs from BLU-series and M26 rocket munitions. Some munition types paralleled concepts in Quickstrike and sensor-fuzed munition work by Textron Systems and ATK (Alliant Techsystems), raising policy scrutiny by groups such as Human Rights Watch and debates within the Convention on Certain Conventional Weapons framework. Fuzing and self-destruct features were implemented following tests at Aberdeen Proving Ground and directives from U.S. Army Materiel Command to meet safety and unexploded ordnance mitigation requirements.

Operational History

Deployment began during the early 1990s with combat employment in conflicts overseen by United States Central Command and missions coordinated with coalition partners such as United Kingdom, France, and Poland. The system was used in major operations including strikes conducted during the Gulf War (1990–1991) aftermath, the Kosovo War, the Iraq War (2003–2011), and operations in Afghanistan (2001–2021). In each campaign, ATACMS launches were coordinated through joint fires centers involving units like 5th Battalion, 3rd Field Artillery Regiment and supported by intelligence assets such as National Geospatial-Intelligence Agency and Defense Intelligence Agency targeting cells. Exported and provided variants saw action in regional conflicts where operators used them for deep-fire interdiction and counter-battery missions. Performance data were collected and analyzed by U.S. Army Test and Evaluation Command at ranges including Yuma Proving Ground.

Export, Operators, and Proliferation

Export policy for the system involved approval processes managed by the United States State Department under the Arms Export Control Act and licensing through the Defense Security Cooperation Agency. Recipients have included NATO members such as Poland, Romania, and Greece as well as partner nations like United Arab Emirates and Qatar under bilateral agreements; deliveries required integration with command-and-control nodes like NATO Allied Command Operations and logistics support from Defense Logistics Agency. Proliferation concerns prompted debates within the United Nations Security Council and non-proliferation community involving organizations such as the Stockholm International Peace Research Institute and International Committee of the Red Cross. Regional security implications were analyzed by think tanks including Center for Strategic and International Studies, Royal United Services Institute, and Institute for the Study of War. Export controls, end-use monitoring, and training cooperation were overseen by offices in Pentagon and partner ministries of defense to mitigate diversion risks.

Category:United States missiles