3 ms·
With regard to footnote 7: As someone who has played a very small part in correcting some misconceptions about how airfoils generate lift, I find that I now hav
by mannykannot 8y ago
With regard to footnote 7: As someone who has played a very small part in correcting some misconceptions about how airfoils generate lift, I find that I now have to apply some corrections the other way: there is necessarily a pressure difference across an airfoil if it is generating lift, and Bernoulli's equation does correctly describe the relationship between that difference in pressure and the equally real difference in local airflow speeds (up to airspeeds where compressibility is an issue, as Bernoulli's equation is only strictly correct for incompressible flows.) What was most wrong with the old explanations was the use of a fallacious 'equal transit time' argument in an attempt to explain the difference in speeds.