Passive control versus active control

[PierreB]

Dave Santos’observation quoted below:

@PierreB

A whole further subject is drogue oscillation dynamics (treated in the paper by Strouhal Number) which can be passively tapped as free-energy for AWE, which kPower over a decade at subscale mastered in praxis, but active control AWES developers disregard. All aircraft are complex oscillators. Kite Oscillations are normally damped by design but can just as well be amplified by design, within stable limit cycles.

I performed a small experiment of an oscillating parachute which is also mentioned in the initial post just above.

Perhaps some level of chaos could simplify control. Is it necessary for a kite to use a precise trajectory? It depends: it may be enough for a kite to produce while remaining in its zone, without requiring a precise trajectory. But in this case we can assume that the power will be limited, unless we compensate by the number of kites which are not likely to be destroyed in low speed collisions.