Icing remains one of aviation’s persistent safety hazards. Even a thin layer of ice on a wing can disrupt airflow and increase the risk of loss of control. The most dangerous type is clear ice, which forms between 32°F and 14°F from supercooled water droplets. Though nearly invisible, it creates a dense film that adheres tightly to metal surfaces, degrading lift and aerodynamic performance.
Conventional anti-icing methods—such as hot-air bleed systems, electrical heating, or chemical de-icers—require substantial energy and constant monitoring by the crew. Modern vibration-based systems using piezoelectric actuators are effective only against ice layers up to 4 mm thick and cannot ensure consistent monitoring over large surfaces.
Researchers at Perm National Research Polytechnic University (PNRPU) have developed a self-regulating coating that detects ice formation, removes it, and confirms the result autonomously. The system demonstrates 30% higher efficiency than traditional solutions and is protected by Russian patent No. 2748665. The project was implemented under the federal academic leadership program “Priority 2030.”
“Our method replaces the conventional electrode layout with two interacting subsystems of interdigitated electrodes (IDE) arranged as dual combs, where the ‘teeth’ of one are positioned between those of the other—or as a flat or cylindrical double-spiral structure,” explained Professor Andrey Pankov of PNRPU’s Department of Composite Materials and Structures, Doctor of Physical and Mathematical Sciences.
The prototype is a multilayer assembly consisting of a piezoelectric plate with integrated electrodes, a polymer protective layer, and terminals for power connection. Computer modeling and lab tests confirmed the system’s capability to shed ice up to 5 mm thick. The complete de-icing cycle—from detection to removal—takes several seconds to one minute.
A built-in self-diagnosis function distinguishes this technology from existing systems. As ice forms, electrical current rises; once the surface is clear, it drops to a minimum. This enables automatic activation and shutdown without external sensors, cutting power consumption by 70–90% compared with traditional methods.
An additional benefit comes from the outer polymer layer, which generates heat during vibration, weakening the bond between ice and surface. This combined mechanical and thermal effect ensures reliable ice removal even in turbulent, high-humidity conditions.
The new technology belongs to the class of adaptive materials and offers applications beyond aviation—in energy systems, transport, and unmanned vehicles. For the aerospace sector, it marks a step toward intelligent coatings that enhance safety and reduce operational costs without human intervention.
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