This is an artist’s (Ben Shepard’s) rendition from Professor Roberts’ preliminary working drawings of a Flying Electric Generator rated at 240kW with rotor diameters of 35 feet.
The total swept area for a Flying Electric Generator of the same power rating as a ground based wind turbine is typically about a quarter as much.
Yet, the Flying Electric Generator would produce far more kilowatt hours of electricity per year owing to the higher speeds and availability of wind at high altitude.