RotoKite

[PierreB]

@Rodread

We’ve demonstrated that Kite rotors still work when you remove the central parts and replace the wing to wing connection with tensile line like the slightly later picture posted on tied flexible wing

That enables a tight autorotation with high speed on all blade elements and lower blockage with less chance of hitting your own wake

Perhaps the inflatable torus of a Rotary ballute-based kite could allow for both better airflow (compared to a central spherical aerostat) while adding or maintaining aerostatic lift. Furthermore, torus-based rotary kites can be stacked for takeoff and landing.

In a similar way, an inner torus could be integrated into the outer torus, being inflated with hydrogen. The volume between the two tori is inflated with nitrogen.