Can we make a quad-copter with a ducted fan and make it perform basic functions? What is good for a quad-copter, ducted or just normal propellers? Why? - Quora
Cleo Robotics Cracks the Code for Ducted-Fan Drone Tech
Fleye Ducted-Fan Drone now on Kickstarter - YouTube
Different examples of ducted fan types. | Download Scientific Diagram
Jet Drone?! - EDF FPV Quadcopter - YouTube
Ducted-Fan UAV developed for military applications (from left to... | Download Scientific Diagram