Ukrainian unmanned aerial systems, Athlon Avia company, has completed an initial series of guided flight trials of the developmental Silent Thunder ST-35 smart loitering system according to Defence Blog.

The Silent Thunder concept is a precision-guided weapon system that would defeat and destroy enemy targets with minimum risk to nearby civilian lives and infrastructures.

The loitering munition will be guided semi-automatically by television or IR guidance heads, which will be swappable as needed depending on the visibility and weather conditions.

The new Ukrainian smart loitering system has a cruise speed of more than 120 km/h. Mass at launch is under 10 kg. An unmanned aircraft system can launch the network. The round can be launched individually or as part of a swarm.

The munition will be available with warheads of several different types and weights. Work is now underway on a Fuel Air Explosive (FAE) warhead weighing 3.5 kg, but other warhead types, including among other things HEAT and HEF are also under consideration for this application. In the future company plans to work even on a shaped charge warhead to be used where there is a high risk of collateral damage.