Have you ever noticed that military and recreational drones have four propellers, but helicopters have three? Here's ...

essentially drawing on the Coandă effect. Although this improved performance, at this point the quadcopter had been fitted with a fifth propeller for propulsion and was skidding about more like ...

A quadcopter however, uses four motors connected to four fixed-pitch props. They are literally propellers attached directly to motors, a sum total of a single moving part for each of the four props.

The ball drone seems well suited to an indoor environment, but we’re not sure if it has any real advantages over a quadcopter with ducted propellers. Servos are cheaper than motors and ESCs ...

After settling on a final schematic, the Bells installed the necessary wiring, motor components, and propellers ... drawing board, constructed a second iteration, and launched the new quadcopter ...

That's why researchers at ETH Zurich have created a control algorithm that allows any quadcopter to keep flying, even if it loses multiple motors or propellers. Because of the risk of crashes ...

Consumer drones are all just slight variations on the quadcopter design … right? Well no, not any longer. The Falcon Mini is a two-propeller "bicopter" which is claimed to be nimbler ...

Created using the same chassis, motors, and propellers that are used to build ... Lockheed Martin Quadcopter Robotics Technology Wing Get the best tech, science, and culture news in your inbox ...

Called Crimson Spin, the device is a small, unmanned quadcopter drone with wings inspired ... this creation relies on small changes to propeller speed to tilt one direction or the other.

EPFL startup Flybotix has developed a dual propeller drone which offers a flight time which is twice as long as that of a standard quadcopter. Samir Bouabdallah has come up with an inventive ...