Science Daily  December 12, 2018 Researchers in Switzerland propose a novel, simpler, yet effective morphing design for quadrotors consisting of a frame with four independently rotating arms that fold around the main frame. To guarantee stable flight at all times, they exploit an optimal control strategy that adapts on the fly to the drone morphology. Using a fully autonomous quadrotor relying solely on onboard visual-inertial sensors and compute, they demonstrated the versatility of the proposed adaptive morphology in different tasks, such as negotiation of narrow gaps, close inspection of vertical surfaces, and object grasping and transportation…read more. TECHNICAL ARTICLE