Mxsmanic wrote:
How does power get from one to the other?


The turbine's output over a second series of fan blades, which are
connected to the propeller shaft. In effect, it's a giant torque
converter (if you're at all familiar with car technology).

In fact, you can hold, with your bare hand, the prop blade during start
up. Just don't let go of it, and don't try to catch it if it comes
loose! (Oh, and RUN!)

Is a feathered prop
always edge to the wind, or flat to the wind

Edge to the wind. The thought is that the engine has already failed in
some capacity, and a windmilling prop causes massive cavitation and
drag, so the blade edge is aligned with the relative wind to stop it
from turning (although not fully, due to mechanical positioning issues,
they get really, really close).