Below are some sketches about a counter-rotating bi-rotor as for Beaujean’s AWES. As the diameter of the rings where the power is taken is about 1/3 the rotor diameter, the linear speed could be about 20 m/s. These speed is doubled if we built and use counter-rotating high speed generators. The fixed rings hold the generators and are used as a frame for the bridle. I don’t think this can scale a lot until some means are found in order to replace rigid parts used for PTO (power take-off) with tensile elements. I thought about a central parachute (sketches below) but the rigidity could be too low to allow the rotor(s) rotate around it.
Counter-rotating bi-rotor:
More details on the following sketches:
The high speed generators could be replaced with rope drive systems
(in the following sketch the PTO is represented at the periphery of the rings, leading to more weight):
Counter-rotating distant rotors around their respective central fixed parachute kites:
PTO with high speed generators:
PTO with rope drive systems:
Think of all of these sketches as drafts in order to come toward with something doable and scalable.