I believe that there is a flaw in Bernoulli's theory as the sole explanation of lift from an aircraft wing, the lower pressure of air above the upper surface of a wing assumes that the air is accelarated relative to the air close to the under surface. I haven't yet seen an adequate explanation why the air above the upper surface has to have the same mass flow as that under the wing, after all the molecules having been seperated at the leading adge don't have to reunite at the trailing edge. If it doesn't have the same mass flow, the explanation for accelaration is anadequate.
Could someone enlighten me?