A Turkish researcher has revealed a new spray-on stealth coating designed to reduce radar detection for drones and small UAVs.
The material, called Kürşat 3.0, uses volcanic minerals and reportedly cuts radar return signals by up to 43 decibels. That figure is significantly higher than the 20-30 decibel reduction commonly seen in existing radar-absorbent materials.
The development comes as militaries worldwide search for better ways to improve drone survivability in modern warfare. The material is designed to help drones avoid radar detection during operations.
The coating was developed by researcher Yunus İnce and a small Turkish defense research company. Test videos released alongside the announcement showed radar attenuation demonstrations. However, independent verification from third-party experts has not yet been completed.
How Radar Absorbent Material Works
Radar Absorbent Materials (RAM) are designed to reduce the amount of radar energy that bounces back to a radar system. These materials convert part of the radar signal into heat instead of reflecting it back toward the receiver. This makes aircraft or drones more difficult to detect and track.
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İnce said the new coating uses volcanic basalt and pumice in its formulation. These natural materials contain microscopic pores that can interact with electromagnetic waves. Researchers believe these porous structures can trap and weaken radar signals before they reflect outward.
Modern stealth aircraft use a mix of special shapes and radar-absorbent coatings to reduce visibility. Older aircraft like the F-117 Nighthawk relied heavily on sharp angular surfaces to redirect radar waves away from enemy systems. Newer aircraft such as the F-35 Lightning II and B-21 Raider combine smoother designs with advanced absorbent materials.
Small drones face a different challenge because they are designed for low cost and efficiency. Many commercial and military UAVs use simple shapes that are not optimized for stealth. Quadcopters are especially vulnerable because their exposed propellers strongly reflect radar signals.
Even so, smaller drones already have a naturally lower radar signature compared to fighter jets or helicopters. Applying a stealth coating could make them harder to detect at longer ranges. That extra delay in detection can increase survivability during combat missions or reconnaissance operations.
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Growing Importance of Drone Stealth Technology
Drone warfare has expanded rapidly since the start of the Russia-Ukraine war in 2022. Both sides have used UAVs for surveillance, targeting, and direct attacks on armored vehicles and infrastructure. The conflict showed how low-cost drones can influence modern battlefield tactics.
As drone use has increased, countries have invested heavily in anti-drone systems. Militaries are developing laser weapons, microwave systems, electronic warfare tools, and conventional air defenses to stop incoming UAVs. Radar remains one of the primary methods for detecting and tracking drone threats.
Because of this, drone manufacturers are now focusing more on stealth and survivability. Reducing radar visibility can make drones harder to intercept before they reach their targets. A spray-on coating also offers a cheaper option compared to redesigning an entire aircraft structure for stealth.
The Kürşat 3.0 system is attracting attention because it aims to deliver stealthy improvements without major design changes. That could be important for smaller defense companies and countries operating large drone fleets. Existing UAV platforms might be upgraded without expensive structural modifications.
Experts still caution that stealth coatings alone cannot make drones invisible to radar. Aircraft shape, flight altitude, speed, and heat signatures all influence detectability. Sensors using infrared systems, acoustic tracking, or visual targeting can still detect drones even when radar detection becomes more difficult.
The next step for the Turkish coating will be independent testing and wider technical evaluation. Defense analysts will closely watch whether the material performs consistently under different weather conditions and radar frequencies.
