I add a sketch (below) for a rough approximation of a design based on the two last rings, with blades for Daisy, and planes for The Pyramid, more or less following what Daisy has experienced. Many elements are missing or inaccurate, but this is only an attempt. This sketch comes from O. Tulloch’s thesis, Fig. 3.10 page 69, and reproduced by Rod.
By the way I tried to introduce a lower ring rolling on cylinders equipped with bearings or open slides, to get a horizontal lower ring (r0) to facilitate take-off and landing for Daisy or The Pyramid. Perhaps generators for PTO can be settled into said bearings, assuring take-off by rotation as motors; otherwise a central generator-motor does the job. Said cylinders also assure a correct tilt during operation, and are piloted to change their respective lengths according to wind changes.
