Source: Deccan Herald
A Ukrainian anti-tank team on the practice range with a “Корсар” (“Corsair”) anti-tank guided missile system. In some publications, the entire system is designated the RK-3 “Корсар” based on the nomenclature of the missiles. Speaking of such, the 107mm missile leaving the tube is a РК–3ОФ (RK-3OF) HE-FRAG (High-Explosive Fragmentation) munition, one of three missile types the Корсар is able to fire. The other two are the РК–3К (RK-3K) tandem-warhead AT (Anti-Tank) missile and РК–3И (RK-3I) inert warhead practice missile. The Корсар isn't a new system with State Design Bureau “Luch” out of Kyiv, Ukraine having commenced development in 2013. After trials, the first 50 examples of the Корсар were delivered to the Ukrainian Army in 2017. In 2018, testing with the Корсар was done using a thermal imaging camera and the final version, shown in this photograph, was accepted for service in 2020.
The Корсар is designed to be lightweight portable missile system to facilitate not only lessen the burden of infantrymen who have to “hump” the Корсар around the battlefield but also to utilize the missile system on armored vehicles without adding unnecessary weight to the overall vehicle. The SPU-3 tripod, with the thermal imager, weighs 26 pounds while the PN-KU guidance system with the launch rail weighs 18 pounds. The average missile weight is 34 pounds. The typical Корсар crew is 2 men. The Корсар breaks down into four components: the SPU-3, the thermal imager, the PN-KU, and the launch rail. These components can be carried in nylon/water resistant backpacks while the PN-KU and thermal sight are carried in a plastic, impact resistant dry box carry case.
The Корсар's missiles utilize SALG (Semi-Automatic Laser Guidance). SALG works by “painting” the target with a laser beam but the missile's seeker doesn't “ride” the beam towards the target. Instead, it picks up the reflected laser energy and aligns itself towards the strongest reflection. SALG is not as robust as true laser beam guidance and targets using HR (Highly Reflective) paint can affect the laser's energy reflection strength while smoke can also interfere with the laser. In addition, laser warning systems can pick up SALG laser designators. The PN-KU does utilize a low power laser to reduce the detectability by laser warning systems. Where SALG excels is in low cost, the ability to lock onto other types of laser designators (manufacturer agnostic), and the ability for the Корсар system to shift positions after launch. The latter is important given the launch signature of the Корсар which would betray the anti-tank team's location and that the operator needs to keep the target “painted” until the the missile hits. The ability to move to another location and reacquire the target without the missile instantly going out of control during the few seconds the guidance stops, even if only a few feet from the initial launch point, can increase team survivability against retaliatory fire. In regards to the backblast, injury would result to anyone within a 30 degree cone from the rear of the launch tube, out to a distance of 32 feet.
The RK-3OF is meant to engage emplacements, soft targets, buildings, and bunkers out to a range of 1.5 miles. The thermal imager permits night engagements out to a range of 1 mile in addition to aiding in target identification. The missile is also equipped with a shock core which is a shaped charge that lets it more easily penetrate hardened fortifications made from concrete and other similar materials. The missile can also drill through 50mm of RHA (Rolled Homogeneous Armor) which makes the Корсар lethal to many IFVs (Infantry Fighting Vehicles), APCs (Armored Personnel Carriers), and IMVs (Infantry Mobility Vehicles). However, against tanks, the RK-3OF would struggle. As such, the RK-3K missile would be used to engage tanks as the missile can penetrate 550mm of RHA armor after ERA (Explosive Reactive Armor).
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