HC50 petrol-electric hybrid unmanned helicopter with autonomous take-off and landing, fixed-point hovering, online mission planning and other functions, with excellent performance such as long endurance, high flight ceiling, high cruising speed, large payload transport, etc., which can meet large-load transportation, reconnaissance, police use, tracking and locking, inspection, search and rescue , surveying, mapping and navigation and other mission requirements, have extremely high application value in civil fields such as long-distance transportation, geological survey, forest fire prevention, agricultural pest control, power line inspection, dangerous airspace sampling, environmental monitoring, traffic control, aerial photography and aerial photography.