
The FanWing prototype that is being shown in this video is a Spinoff scaled down UAV version and was designed for slow-flight urban surveillance. It is also designed for quick assembly and set up, (about 5min out of the box). The wood and composite construction STOVL UAV has a span of 2.5m, a mass of 8.5kg, and a flight speed approaching 39kt.
This design allows for very steady flights and attack angles which are not possible in other aircraft without losing stability. The fan allows the aircraft to almost float in the air, with the capability of moving very slowly, resisting turbulence and winds with ease.
Source