I did some testing of the 75m Skybow arch kite By Roy Mueller
Some videos on youtube from around this time…
It’s a mad spinning ribbon kite… Rotation up to 20kHz in a strong wind.
Works on magnus effect across the whole ribbon.
Adding any more torque than a fingernail dragging on the ribbon edge will stall the rotation.
And I couldn’t be bothered making a coordinated controlled generator each side…
However the tug vibration into the anchor is potentially a source to tap…
Whole kite makes a very loud howl best heard at the focus of the ribbon.
The ground around the anchor is really made to vibrate.
But nowhere near the 10cm stroke you are looking for.
There may be a way to hold the bearing housing so that the 20kHz can be tapped.
Note I’ve also flown this ribbon between 2 lifters… Q… Can you array ribbon generation up 2 lines?