Adaptation of Ukrainian Su-25s for French AASM HAMMER Precision Bombs.

The Ukrainian Air Force has successfully adapted its Su-25 attack aircraft to utilize French AASM HAMMER precision-guided bombs, according to Colonel Serhii Holubtsov, Chief of Aviation at the Ukrainian Air Force Command. This adaptation is a critical step in modernizing Ukraine's arsenal, especially following the depletion of unguided munitions used at the start of the intense conflict that began over a year ago.
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The Ukrainians army adapted their Su-25s to deploy the AASM HAMMER bombs, which transform traditional unguided bombs into precision weapons through a kit that includes a guidance system and rocket booster to extend the range of the bomb. (Picture source: Ukrainian Air Forces)

Initially, Ukrainian forces relied on existing stockpiles of unguided munitions for their Su-25 jets. As these stocks dwindled, the United States provided Zuni rockets from their reserves to maintain operational capabilities. However, these stocks also ran out, and restarting their production was deemed impractical due to the shift towards precision-guided weapons in Western arsenals. In response, the Ukrainian military adapted their Su-25s to deploy the AASM HAMMER bombs, which transform traditional unguided bombs into precision weapons through a kit that includes a guidance system and rocket booster to extend the range of the bomb.

The Su-25, a Soviet-era close air support aircraft, entered production in the late 1970s and was officially introduced into service in 1981. Known for its robustness and ability to operate from unprepared runways, the Su-25 is designed for ground attack missions, similar to the U.S. A-10 Thunderbolt II. The aircraft is equipped with various integrated weapons, including cannons, rockets, and bombs, and has undergone numerous upgrades to enhance its avionics, armaments, and survivability.

Currently, Ukraine has 16 active Su-25 aircraft primarily used for close air support missions. These aircraft benefit from their capability to operate at low altitudes and close to frontline positions. In January 2024, French authorities announced the delivery of AASM guided bombs to Ukraine, following the provision of guided SCALP missiles. Several batches have been delivered monthly, aiming to reach a total of 600 units by the end of the year.

The AASM (Armement Air-Sol Modulaire), also known as HAMMER (Highly Agile Modular Munition Extended Range), developed by Safran Electronics & Defense, began production in the early 2000s and entered service with the French Air Force in 2007. The AASM is designed to convert standard unguided bombs into precision-guided munitions, similar to the American JDAM system. The first production version was based on the Mk 82 unguided bomb, with subsequent modifications made to accommodate various bomb calibers, including 125, 500, and 1000 kg. The AASM kit includes a guidance section with fins and a rocket booster, enhancing the bomb's range and accuracy.

Colonel Holubtsov emphasized the importance of these improvements, noting that they have not only kept the Su-25s in service but also significantly enhanced their effectiveness in offensive roles.