Hold your hand palm down out of the window of a moving car.Tilt the angle of your hand up ,your whole hand then raises.Tilt your hand down,your entire hand moves down.
Hold your hand palm down, hand flat, out of the window of a moving car, fingers pointing forward. Tilt your hand up, your hand is pushed back quite a lot, and up a little bit. Now curve your hand a bit, and tilt it up. Your hand is pushed back a little bit, and up quite a lot. Nice demonstration of the effect of a curved aerofoil, that
