Thanks for the “They work well”… not yet … nowhere near… Working well is a long way off. I love testing and improving it. But there’s a really long road of game-changing performances ahead.
As for flying several hundred meters from the ground… The OTS shaft length is a fantastic indicator here. A closely repeated pattern on long lines in tension, connected and held apart by small rigid components - Has just been demonstrated at an AWESome scale with only a small lift kite controlled by 1 person. The rotor requires very little lift and that rotor is stackable. So more tension can be added thus more efficient torque transfer. The lines are not on a large diameter so there’s no really high speed drag. The rotor is already far higher than it needs to be, to be safe. (e.g. see how insanely close to the ground mine was. Yes I need to get sewing again.) OK the OTS was wobbly. And I personally don’t like sticks… as a very general rule.
As for making a Daisy ring to ring torque tube bigger. The results I’ve been eeeking out slowly say… For the same overall tension on top, more lines around a ring are more drag, but it’s also less ring compression.
Wider ring diameters may be more drag, but it’s also less ring compression.
All the lines go 1 way, so they can be faired to flow.
Diameters larger than spacings means the whole stack can be back-driven from completely squashed.
Hollow axis means it can be run around and also hoisted up and down a fixed line.
A really wide hollow axis, yes, needs a bigger ground station but starts being like carousel or The CSR (Centrifugally Stiffened Rotor-wing) as proposed by Mark Moore.
This doesn’t have to be a torque system alone… there can be props / blades on the driver wings.
- yes they can fit inside lift networks or lited lattices.
Yes you could conceivably use a belt (if you like) (I don’t)
Above the shaft part if you keep the same architecture of lines running up under tension in rings… The Daisy type kite rotors not only fit into the general torque transmission pattern really well, they actively enable more scale because the driving kites expand the rings whilst lifting and pulling the line round.
Not sure yet if the wider rings means less ring compression effect works at long scales… It works on the short simulation lengths I’ve tried, where I have fixed end points.
All these calculations need to be independently verified of course… please
For starters I think I may have stopped some of the form finding too early with a kangaroo threshold value of 0.00000000001
Hoop rotation multi ring K2 loop DAM v2 8 lines wider 5,4lift.gh (3.5 MB)
Better yet …if you’ve got a decent computing rig… double thanks… This is blocking my processor now