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France Validates New AASM LIR Dual Mode Guidance After Rapid 24 Hour Trials.
France’s DGA validated Safran’s AASM LIR dual-mode seeker during rapid-fire trials at Biscarosse. The breakthrough strengthens precision strike flexibility and accelerates delivery of upgraded munitions from 2026.
Safran confirmed that three AASM LIR firings were completed in under 24 hours under DGA supervision, marking an accelerated qualification milestone rarely seen in French weapons testing. The new seeker fuses laser designation with infrared homing, enabling engagement of both fixed and moving targets in contested environments. The system is designed to improve resilience against countermeasures and degraded targeting conditions. This guidance architecture is also slated for integration into the THUNDART long-range rocket, extending its impact beyond air-launched munitions.
French Rafale F4 Fighter Equipped with Safran's Hammer Precision Bomb (Picture source: Safran)
The Armement Air-Sol Modulaire (AASM), also known as HAMMER, is based on a modular guidance and propulsion kit fitted to standard bomb bodies. Already fielded in several configurations, it combines inertial navigation with Global Positioning System support and terminal guidance modes using infrared imaging or laser designation. This configuration allows a Rafale to engage targets at distances approaching 70 kilometers while maintaining high accuracy in all weather conditions. The range-extension module, based on a solid-propellant booster, provides stand-off capability and reduces exposure of the aircraft to ground-based air defense systems.
The AASM LIR introduces a unified seeker combining infrared imaging and semi-active laser guidance while retaining the inertial and GPS architecture. This fusion enables the munition to operate with multiple engagement modes within a single mission profile. Infrared imaging allows autonomous target acquisition based on thermal signatures, while laser guidance enables engagement of moving targets designated by airborne or ground-based assets. Safran states that this configuration improves resilience in Global Navigation Satellite System denied environments, where satellite navigation signals are disrupted. In such conditions, the munition relies on inertial navigation during the mid-course phase and transitions to its onboard sensors in the terminal phase to maintain accuracy. As reported by Opex360 on March 21, 2026, the three successful firings conducted under DGA supervision mark the completion of the qualification campaign, pending final documentation.
This technological development directly supports the THUNDART system under the Frappe Longue Portée Terrestre (FLP-T) program launched by the DGA in 2023. Designed around a 227 mm surface-to-surface rocket with a range of approximately 150 kilometers, THUNDART is intended to replace the Lance-Roquettes Unitaire, currently limited to about 70 kilometers. The system relies on a guidance kit derived from AASM, enabling the reuse of a proven technological base and reducing development risks. Demonstration firings are expected in mid-2026, with entry into service planned before 2030. In addition, AASM and FLP-T munitions are expected to share a common production line, with increased output to meet future operational requirements.
Adapting a guidance system designed for an air-launched munition to a ground-launched rocket introduces specific technical constraints. The seeker must withstand higher launch accelerations and maintain stability over a longer ballistic trajectory. As the range increases, atmospheric disturbances and ballistic dispersion become more pronounced, requiring precise corrections during the terminal phase. The combination of inertial navigation and multi-mode guidance compensates for these effects and ensures high accuracy against both fixed and moving targets, including at maximum range.
The dual-mode seeker provides increased operational flexibility. Air and land forces can engage a broader range of targets without relying exclusively on satellite navigation or a single designation method. In contested electromagnetic environments, where jamming and deception are widespread, the ability to switch between guidance modes or operate autonomously becomes a key advantage. For artillery units, this reduces dependence on external targeting networks and improves survivability. At the same time, the common guidance logic between air-to-ground munitions and surface-to-surface rockets facilitates joint fires and integration into digitized fire-control systems such as ATLAS.
The timeline nevertheless remains constrained. The Lance-Roquettes Unitaire currently in service is expected to reach its support limits by 2027, while FLP-T is not scheduled to enter service before the end of the decade. This gap requires consideration of interim solutions, whether national or based on foreign acquisitions, each involving trade-offs between sovereignty, interoperability, and delivery timelines. In this context, the rapid qualification of AASM LIR reinforces confidence in domestic industrial solutions, while not eliminating the need for a bridging capability.
Beyond the French case, this development reflects a broader shift in contemporary conflicts. The integration of multi-mode guidance capable of operating under electronic warfare conditions into both air-launched and ground-launched munitions indicates an adaptation to environments where electromagnetic superiority is no longer assured. Lessons from recent conflicts show that exclusive reliance on satellite navigation has become a vulnerability. By developing a sovereign long-range precision strike capability, free from International Traffic in Arms Regulations constraints and based on established technologies, France positions itself as both an industrial actor in Europe and a partner able to influence future defense cooperation and strategic balance.
Written By Erwan Halna du Fretay - Defense Analyst, Army Recognition Group
Erwan Halna du Fretay holds a Master’s degree in International Relations and has experience studying conflicts and global arms transfers. His research interests lie in security and strategic studies, particularly the dynamics of the defense industry, the evolution of military technologies, and the strategic transformation of armed forces.