There is a natural method of seed dispersal in which Mother Nature takes full advantage of the high drag induced by free windmilling effect of a prop blade. Up here in the NorthEast, it's just about time for the trees displaying this mode of seed dispersal to strut their stuff. We don't need to complicate something this simple, perfected by Mother Nature herself, eons ago.
MattK
ORIGINAL: ElectRick
I've read somewhere on these forums that an idling large diameter prop presents much more of a braking effect than a stopped prop. It seems to make sense if you think about it. Besides, having a brake engage to quickly stop a large diameter prop would seem to be putting a lot of inertial stresses on the motor shaft and/or gearbox.
Maybe someone else can corroborate that.
Rick