Flettner balloon and VAWT side by side

[PierreB]

@PierreB

Maybe we could use the “double winch drive on both ends of a single cable” like a rope drive (rope without end) during operation, and like it is (double winch) to allow takeoff and landing by rotation. For this, the rope between the two winches should be connected when they are completely unwound.

From the preprint (DOI:10.13140/RG.2.2.17939.08487):

Rope drive system connected to the double winch

A rope drive system cannot change its length during power generation. So the double winch according to the device invented and patented by WindFisher [16 and 17] is integrated into the rope drive system.

The motorized double winch is used during takeoff and landing operations, where the generator is used as motor. The lower ends of the rope of the double winch are connected, forming the rope drive system. The removable rope blockers are used to rewind the rope.