The LH15 tethered drone is a cutting-edge unmanned aerial system (UAS) designed for persistent aerial operations, combining the advantages of traditional drones with the reliability of a tethered power supply. This innovative platform is engineered to deliver extended flight durations, enhanced stability, and secure data transmission, making it ideal for applications requiring continuous aerial surveillance, communication relay, or situational awareness in both civilian and defense sectors.At the core of the LH15’s design is its tether system, which provides uninterrupted power from a ground-based source, eliminating the need for battery swaps and enabling 24/7 operation. Unlike conventional battery-powered drones limited by flight time, the LH15 can remain airborne indefinitely, ensuring mission continuity for critical operations such as border security, event monitoring, or infrastructure inspection. The tether also serves as a high-bandwidth data link, offering secure and real-time transmission of high-resolution video, sensor data, or communication signals without interference or latency issues associated with wireless systems.The drone features a robust and aerodynamic airframe, optimized for stability in diverse weather conditions. Its propulsion system is engineered for low noise and high efficiency, reducing detectability and energy consumption. Equipped with advanced gimbal-stabilized cameras, the LH15 delivers crisp, multi-spectral imagery (visible, thermal, or IR) for day/night operations. Optional payloads include LiDAR, radar, or signal repeaters, allowing customization for specialized missions.Safety is a key priority, with redundant systems for power and communications, as well as fail-safe mechanisms to ensure controlled recovery in emergencies. The ground station is compact and portable, enabling rapid deployment in remote or temporary locations. With its combination of endurance, versatility, and reliability, the LH15 tethered drone redefines the possibilities of persistent aerial presence for modern security, industrial, and public safety needs.