The Coanda [or "coma daily" as my iPad helpfully autocorrects] Effect also contributes to lift. The air "sticks" to the surface of the wing and leaves the trai

The Coanda [or "coma daily" as my iPad helpfully autocorrects] Effect also contributes to lift. The air "sticks" to the surface of the wing and leaves the trailing edge in a partially downward direction i.e the air is deflected downward by the top of the wing not just the bottom. For a quick demo of this, hold the bowl of a spoon under a running faucet and see how it pulls the spoon into the stream.