HY600 is a large multi-purpose high-altitude unmanned helicopter featuring a conventional single-main-rotor configuration with tail rotor. Designed for high- and low-altitude operations, it adopts maintenance-free rotor hubs, modular design, and quick-disassembly structures for efficient transport and maintenance.Equipped with composite materials, titanium alloy structures, a turbocharged aviation engine, and redundant avionics, HY600 provides high reliability, strong adaptability,and excellent performance.