A new type of hexarotor drone called the 2Y hexarotor has been developed to be more efficient and resistant to rotor failure. The researchers designed the drone with a special shape and angles to improve its flight efficiency. They also proved that the 2Y hexarotor is fully robust against rotor failure and developed a way to measure this robustness. By optimizing the angles of the rotors, they were able to maximize the drone's maneuverability while maintaining its robustness. This design method ensures the drone can fly smoothly even if one of its rotors fails.