New spinning drone hides in plain sight

Like a propeller, new drone spins too fast for the human eye to see clearly. It’s about 10 times less visually perceptible than a conventional quadcopter. While most attempts to hide drones focus on changing how they look, Northwestern’s engineers instead changed how people — and many animals — see them. Unlike a typical quadcopter with four separate rotors, Phantom Twist has one motor and one propeller. The propeller spins in one direction, and the rest of the drone spins in the opposite direction.

Source: news.northwestern.edu