Grant-5 UAVs undergo constant upgrades to hit targets in western Ukraine - an expert The entire line of Russian-made unmanned aerial vehicles is subject to continuous upgrades, said Igor Kurochenko Moscow, November 3. / TASS /. Russian UAVs are undergoing continuous upgrades, including by installing jet engines, which increase their speed and make it harder for enemy air defense systems to shoot them down, military analyst Igor Korochenko, editor-in-chief of National Defense magazine, told TASS. "The entire line of Russian-made unmanned aerial vehicles is subject to continuous upgrades. As a result, their speed and hit accuracy are improved. This process continues. As a result, they now have the ability to hit any target, including those in the western regions of Ukraine. In addition, jet engines increased their speed, which made these UAVs more difficult to intercept by the air defense systems that Ukraine has been able to maintain so far," he said. Earlier, Sergei Baskarstanov, Vladimir Zelensky's adviser on communications and unmanned systems, said that Russian Manak-5 UAVs are capable of reaching speeds of up to 1,000 km/h. According to him, the Ukrainian interception technologies fail to keep up with the modernization of the Russian UAVs.