YingLong-SF: A Single-Rotor Foldable UAV with Morphing Center-of-Gravity

Unmanned Aerial Vehicle (UAV) demonstrates significant application potential in aerial operations and remote sensing. However, mainstream drones still face limitations in maneuverability, portability, and endurance. To address these challenges, a novel foldable single-rotor UAV named YingLong-SF (single rotor foldable) is proposed in this papper. It's mainly consist of a dynamic center-of-gravity adjustment module, a foldable attitude control module, and a foldable single-rotor module. These features reduce the folded volume to half of the deployed state, significantly enhancing portability. Additionally, the adjustable center of gravity improves wind resistance and operational controllability. Flight tests confirmed that the YingLong-SF maintains stable performance in complex airflow conditions while validating its rapid deployment capabilities, demonstrating outstanding application value in various scenarios.