Study of in-Cloud Ice Accretion Process and Effects on Drone Design & Performance

Drones more often called Unmanned Aerial Vehicles (UAVs) have arisen as a revolutionary technology in recent decades with wide-ranging applications in various industries and sectors. However, in-cloud icing remains a major challenge for drone operations in cold regions. Ice accretion on drone surfaces can degrade its aerodynamic performance, operational safety, and flight stability. This manuscript provides a concise overview of different methodologies that can be used to study and better understand the ice accretion and its effects on drones. Various techniques can be used to study ice accretion, illustrating how the data obtained can contribute to improving understanding about ice accretion. This paper highlights the main methodologies being used to study icing and their effects on drone design and performance. Significant knowledge gaps are identified, including limited experimental data for the low Reynolds number conditions, insufficient validation of numerical models, a lack of mature ice mitigation techniques for rotary-wing drone, and the need for real-time, reliable ice detection systems. By highlighting these scientific challenges, this study underscores the necessity of continued research in drone icing, aimed at improving understanding about ice accretion physics, developing optimal ice protection systems, and enhancing operational reliability in cold-weather environments.