Meet the PufferBot: a flying robot with an expandable structure that changes shape to protect its propeller around obstacles or around humans. It has a 3D printed scissor structure with a 1DOF actuator with rack & pinion mechanism. The approach enables these drones to fly while taking less damage in case of a collision.
Must see robots & drones:
PufferBot: Actuated Expandable Structures for Aerial Robots
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