It would have to be extremely large I suppose, perhaps a kilometer in diameter (maybe 10 km?), so that the Kevlar tether could exert enough leverage to drive a 100 MW wheel without breaking.
I mean a whole bunch of tethers. Obviously leverage does not increase power. I was trying to imagine a scheme that would allow steel or Kevlar tethers to exert this much force, and I imagined a giant wheel with hundreds of cables. I guess you could loop them around 100 separate drive wheels instead of one great big one.
- Jed
