Elephant trunk drone arm bends, grabs, and works in tight spaces

Researchers at the University of Hong Kong have developed the Aerial Elephant Trunk (AET), a flexible, shape-shifting robotic arm inspired by an elephant’s trunk, designed to enhance drone capabilities in complex manipulation tasks. Unlike traditional rigid drone arms with grippers, the AET uses a soft, continuum structure that can bend, twist, and wrap around objects of various sizes and shapes, enabling drones to operate effectively in tight spaces and awkward angles. This innovation addresses key limitations of existing aerial robots, such as weight constraints and limited range of motion, allowing drones to perform tasks that require both reach and finesse. The AET’s dexterity and adaptability make it particularly valuable for applications in disaster response, infrastructure maintenance, and inspections in hard-to-reach environments. It can navigate narrow pipelines, maneuver around obstacles, and handle delicate operations like clearing debris from collapsed buildings or repairing high-voltage lines and bridges. By expanding the functional roles of drones beyond observation to hands-on interaction, the AET represents a