The idea of the wing as an air-deflector seems false to me as a physicist. Taken hand in hand with the Bernoulli model air will flow downwards as a consequence of lift, but the wing doesn't water-ski through the air.
Not only would drag be an insurmountable obstacle, but a cambered wing can generate lift with a negative angle of attack, which sort of disproves the whole theory anyway.
I believe (dredging my memory back to ATPL theory) that a very small proportion of lift is from the reaction of the lower surface of the wing from the relative airflow.
Last edited by David Horn; 31st Dec 2009 at 10:36.