Researchers at Seoul National University of Science and Technology have developed a multi-rotor transport drone designed to self-correct and maintain balance during flight, even over uneven terrain such as stairs. Dubbed the “Palletrone,” the drone could serve as a “flying shopping cart” for carrying goods.
The drone features a cargo platform mounted on top of flexible rotors, and is controlled by a person using light pressure to guide it while hovering. It employs a center-of-mass estimation algorithm to maintain stability in flight, allowing it to carry objects up and down stairs with ease.
Led by Professor Lee Seung-jae, the team demonstrated the drone’s capabilities, which respond to human control through a physical human-robot interaction technique that anticipates human intentions, ensuring smooth movement. While the prototype is designed to carry up to 3 kg (6.6 lbs), the researchers believe the underlying technology has broader applications, including sensitive cargo delivery and future uncrewed “flying taxis.”
Though current multi-rotor drones are limited in speed and range due to battery constraints, the team envisions future advancements, such as mid-air battery swaps, to extend drone operation times. The team’s work was recently published in IEEE Robotics and Automation Letters, highlighting the potential for both commercial and humanitarian uses.
