Understanding Aerodynamics Arguing From The Real Physics Pdf -

Furthermore, the lift predicted by the equal‑transit‑time model is far too small—typically only a fraction of the lift actually measured. As NASA’s Glenn Research Center summarises: “The lift predicted by the ‘Equal Transit’ theory is much less than the observed lift, because the velocity is too low”. Yet this explanation continues to appear in pilot handbooks, textbooks for the general public, and even some introductory engineering courses. The reason was candidly stated by the legendary aerodynamicist Theodore von Kármán: “When you are talking to technically illiterate people you must resort to the plausible falsehood instead of the difficult truth”. The “plausible falsehood” is easy to teach, but it is not physics.

Doug McLean's book, Understanding Aerodynamics: Arguing from the Real Physics understanding aerodynamics arguing from the real physics pdf

The air exerts an equal and opposite force upward on the wing. The reason was candidly stated by the legendary