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Sprite may look like a Thermos but it's one of the most rugged drones yet | T3
Can a drone fly with 1 propeller? - Quora
Single blade propeller multirotor test 2 - YouTube
How many propellers does your drone need? – how to fly, the science of flight - Drone Rush
DuoCopter, the perfect drone
Amazon.com: GoolRC C186 Remote Control Helicopter Remote Control Drone Single Propeller Without Ailerons 6-axis Gyro Stabilization Remote Control Airplane Altitude Hold Girls Adults Gray : Toys & Games
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RC Helicopter RC Drone with Camera 720P Single Propeller Without Ailerons Optical Flow Localization 6-axis Gyro Stabilization : Amazon.ae: Toys
Flies Like A Quadcopter, But This Drone Design Has Only One Propeller | Hackaday