Introduction: The KS3850 is a large-capacity long-endurance electric hexacopter unmanned aerial vehicle. It is also equipped with a drop-off system on board, enabling quick loading and unloading. It is widely used in transportation, emergency response, and rescue operations. The maximum take-off weight of the KS3850 is 520kg, and the maximum payload is 200kg. It sets a precedent for large-capacity all-electric unmanned aerial vehicles and is a significant asset for material transportation.