This isn’t really about the electronics at all, but rather about balancing a spinning object. I’m trying to understand the physics, and maybe someone here will have an answer.
Anyway, suppose you’ll be spinning a perfect, massless disc which has various weights mounted on it at various distances from the axis of rotation. The disc plane is vertical, and the axis of rotation is horizontal. And you manage to arrange the weights so that the disc assembly is in balance at rest. By that I mean that no matter where you position the disc, when you release it, it stays put. It has no tendency to rotate to a “heavy” spot. There’s no pendulum effect.
The question is - when you spin up the disc, will it still be in balance? It seems to me it would not be. But apparently they balance drone propellers statically that way, and they remain balanced when spinning. So maybe I’m wrong. Does anyone know for sure? Does anyone have a link to an explanation of all this that a civilian can understand?