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
Drone Deploys in Just Minutes but Flies for Hours - ASME
3D-printed UAV now sports ducted fan motors
Ducted fan - Wikipedia
QF2827-70mm Ducted Fan 12 Blades EDF with 2827 KV1800 60A Brushless ESC for RC Drone Airplane, Electric Motors & Parts - Amazon Canada
A Safe, Ducted Drone With No Visible Blades | Hackaday
Electric Ducted Fan for VTOL drone | 3D CAD Model Library | GrabCAD
QX-MOTOR 70mm 12blades EDF Kit Ducted Fan EDF for Drone RC Brushless Motor New | eBay
RC Drone Brushless Motor Fan 70Mm 12 Ducted Fan 4S Drive EDF per RC Drone Brushless Motor Quadcopter accessori - AliExpress