Recent talk about laddermills got me thinking about them. Here’s a concept I came up with today:
Your rope drive is now rotating around its longitudinal axis too. The kites are flying (crosswind) in a circle around it, in a large radius going up, in a small radius and minimal drag mode going down.
Further development is left as an exercise for the reader.
Benefits include: crosswind operation possible with a relatively simple and light kite; low total line drag compared to single kite yoyo awes; (variable) strength in numbers, not size.
Drawbacks include: ground station design still a black box.
To begin testing and thinking you would need at least: 2 fixed points some distance from each other, a loop of line, a number of pulleys, a kite (optional), a motor (optional), an image in your head of your design.