Rotating Cables Against Drones — Desperate Improvisation or the Birth of a New Tactic for Russian Air Defense

The Russian army is testing an experimental system for protection against FPV drones in the occupied territory of the Zaporizhzhia region, based on rotating cables. The prototype, shown on the "Russia-1" channel on February 9-10, consists of a robotic platform "Depesha" with four rotating discs, each equipped with 9-10 steel cables. This is perhaps one of the strangest solutions in the field of anti-drone protection throughout the war — and at the same time an indicator of how deeply the FPV threat has penetrated the Russian military agenda.

Patents of 2023 and the Reality of 2026

The concept of drone protection using rotating elements was patented by the Russian Ministry of Defense back in December 2023, and a modified version in May 2025. The fact that more than two years passed from the patent to field tests speaks not so much of technological complexity (the system is elementary) but of the long path to recognizing the problem at the institutional level. The Russian army in 2023 still believed in the sufficiency of electronic warfare and classic air defense means to combat FPV drones. The emergence in February 2026 of the "shed with propellers" (as it was dubbed on social media) is an acknowledgment that neither the "Pantsir" nor electronic warfare stations solve this task.

The prototype was assembled by the repair company of the 70th Guards Motorized Rifle Regiment — a characteristic detail. This is not a product of the defense industry, not a development of a research institute, but a frontline improvisation based on what was at hand: the robotic platform "Depesha" (load capacity of 200 kg, speed up to 30 km/h) and steel cables. In this sense, the system continues the logic of "barbecues" on tanks and mesh corridors — solutions that the Ukrainian side initially mocked but then adopted.

The Physics of Cables and Limits of Applicability

Cables have one significant advantage over rigid blades: lower weight and reduced risk of damage upon contact with the ground. However, the video footage of the tests shows movement only over flat terrain — no bushes, tall grass, or rough terrain. Defense Express rightly raises the question: how will the cables behave in real conditions, where every bush can entangle them, and every pit can disable the rotating mechanism?

The second question is the protection of the upper projection. The cables rotate horizontally, covering the sides of the platform, but what happens when attacked from above — the main vector of attack for FPV drones? Russian TV does not provide an answer. Apparently, it is assumed that a steel grid on top will handle this task, but then the question arises: why are cables needed at all if the main protection is the grid?

The third point is the shock wave. Even if the cables knock down a drone before detonation, the explosion of a charge half a meter away from the platform can still damage the rotating mechanism or the "Depesha" itself. And if there are munitions or wounded on board (as some commentators suggest), the system turns into a "coffin with cheerful fans."

Strategic Context — Exhaustion of Classic Air Defense Means

The emergence of such systems indicates that Russian short-range air defense is struggling with the mass use of FPV drones. The "Pantsir-S1," the Tor air defense system, and even the latest complexes like "Sosna" were developed to combat missiles, helicopters, and classic UAVs, but not swarms of cheap FPVs flying at low altitudes at speeds of 100-150 km/h. The cost of shooting down a $500 drone with a "Pantsir" missile ($30,000+) is economically absurd. Electronic warfare works selectively and is overloaded with frequency bands.

In this situation, the Russian army is moving towards mechanical protection — and here "rotating cables" make sense as a cheap solution for a specific niche: protecting rear cargo robots in relatively calm areas of the front. Not for assault actions, not for the front line, but for delivering munitions and evacuating the wounded in the near rear, where the FPV threat exists but is not critical.

Prospects and Limitations

Defense Express predicts that Russia will continue to experiment with improvised anti-drone solutions, and new samples will appear in the coming months. This is true, but it is important to understand: such systems will not replace a full-fledged air defense. They fill tactical niches where classic means are either excessive (in price) or ineffective (in response speed).

The Russian defense industry will likely standardize the most successful frontline improvisations and launch them into mass production — as has already happened with mesh screens. But the fundamental problem will remain: in conditions of total UAV dominance, no army in the world has yet found a universal solution. "Rotating cables" are a symptom of adaptation, not a cure.

Sources: Defense Express, United24 Media, Kyiv Post, Russian patent RU 2023 (December), "Russia-1" channel (February 2026), data on the "Depesha" platform from the "High-Precision Complexes" holding.