Figure 2 from Design, modelling and control of a Single Rotor UAV | Semantic Scholar
The drone designed to fly on one propeller - BBC News
DuoCopter, the perfect drone
The Cleo 'indoor-friendly' drone flies using a single propeller unit - Yanko Design
The drone designed to fly on one propeller - BBC News
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
Arduino Pid control of a Single Propeller of a Drone : r/DIY_tech