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A Turkish defense researcher has unveiled a sprayable stealth coating designed to make drones significantly harder to detect by radar, as militaries worldwide race to improve survivability in modern drone warfare.
The material, called Kür?at 3.0, was developed by Turkish researcher Yunus ?nce and their small defense research firm after more than seven years of development. The coating reportedly reduces radar return signals by as much as 43 decibels, substantially higher than the 20 to 30 decibel reduction commonly associated with traditional radar absorbent materials, according to Defense Blog.
If independently verified, the technology could represent a meaningful advancement for low-cost uncrewed aerial vehicles, particularly smaller combat drones that already benefit from reduced radar visibility due to their compact size. Applying an absorbent stealth coating could make them even more difficult to detect, track, and engage using conventional radar systems.
The rise of drone warfare has transformed military strategy over the past several years, especially following the Russia-Ukraine war, where inexpensive UAVs repeatedly demonstrated their ability to disrupt armored formations and strike high-value targets. In response, countries have invested heavily in anti-drone systems ranging from directed-energy lasers to microwave weapons and electronic warfare platforms.
Traditional stealth technology typically relies on two key elements: shaping and absorption. Aircraft such as the Lockheed F-117 Nighthawk used angular surfaces to deflect radar signals away from receivers, while newer platforms like the Northrop Grumman B-21 Raider and Lockheed Martin F-35 Lightning II combine aerodynamic designs with advanced radar absorbent materials.
?nce says Kür?at 3.0 instead relies on volcanic basalt and pumice structures engineered at a microscopic level to absorb electromagnetic waves and convert them into heat. The porous nature of these volcanic materials could theoretically help trap radar energy before it reflects back to enemy sensors.
The approach may be especially attractive for drones because most UAVs are designed around affordability, endurance, and ease of production rather than expensive stealth shaping. Quadcopters, for example, naturally produce strong radar reflections from their exposed rotors and frame geometry, making full stealth difficult to achieve through design alone.
Still, experts caution that the coating’s performance claims have not yet undergone independent third-party verification. Real-world effectiveness would likely depend on factors including radar frequency, environmental conditions, drone geometry, and coating durability under operational stress.
Even so, the concept highlights how the next phase of drone warfare may focus less on building larger or faster UAVs and more on making existing systems harder to detect altogether.
