"They don't cup air as much as they redirect the flow and cause a greatly increased negative pressure above the wing. So yes the wing pressure is lowered on the top. This gets more complex when the flaps are extremely deflected or when there are multilple slots in the flaps. The pressure distributions become complex and will greatly change but the whole idea is to create less pressure on the upper surfaces of the wing and greater pressure under the wing."

Which is it? Redirecting flow leading to negative pressure? Or creating less pressure over AND greater pressure under?

So tell me, if lift=downwash in a propeller, what's the difference between a propeller and a wing? Isn't a propeller blade a wing that's traveling in a circle? I think it is, but I could be wrong.

As far as turbine engine planes having control lag, I'm not speaking of lag due to tubbine planes having smaller control surfaces relative to the plane. You could take two P-51 Mustangs, one with a prop in the front, another with a turbine thrusting out the back, and the one with the prop would have better maneuverability at slow speeds because the prop is blowing air over the control surfaces. The control surfaces of the turbine-powered airplane, however, are dependent on the speed of the airplane to provide air passing over them at adequate speed for deflection. An F-18, whose elevators and rudders are well in front of the rear "nozzles", doesn't have jet wash going over its control surfaces. Does it?

If everything I've said above is correct, then we can come to the conclusion that a propeller, which is essentially a cambered wing, produces foreward motion by 1. increased pressure "underneath" the blade, and 2. wash.

Consider this as well: A propeller with a greater pitch is harder for the engine to spin at a given RPM than the same size propeller with a lesser pitch. But, when spun at the same RPMs, the higher-pitched prop will provide more thrust, regardless of the shape of the prop. Agreed? Similarly, an airfoil with a greater angle of attack is harder to push through the air than one with a lesser angle of attack, yet, if pushed through the air at the same speed, the greater angle of attack will produce more lift (until stall occurs, of course), REGARDLESS of the shape of the airfoil. Agreed?

So, would you say that I've successfully and accurately compared a propeller to a wing?