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Originally Posted by winkosmosis
This thread is turning into walls of text so I want to discuss you arguments one by one
Think of a simple example, the wing of a bird. How does a bird fly? By pushing against the air on the downstroke. The air is exerting a force opposite to the direction of motion because it has viscosity and resists movement through it.
How about the propeller? Picture in your mind a simple flat propeller blade. The leading edge slices into the viscous air, and pulls the airplane through the air. Why? Because the air is exerting a force on the blade. That force is both forward (relative to the airplane) and against the motion of the blade. Think of the leading surface of a car as the the leading surface of the propeller.
Similar to the propeller blade is the airplane wing... No, planes don't fly because of Bernoulli's Principle, that's one of those myths that gets repeated even in textbooks.
75% of the lift on a wing comes from the top, and 25% on the bottom according to the FAA. If you were right about no force being applied by air to the leading sloped surfaces of a car, then the bottom of the wing would provide 0% of the lift.
How an Airplane Wing REALLY Generates Lift - Associated Content from Yahoo! - associatedcontent.com |
I attended the lecture/seminar on Newtonian Aerodynamics by Craig(?) at Oshkosh in 1997 and own his book.He makes some strong arguments.
As to Daniel Bernoulli,his physics is quite adequate to design perfectly serviceable aircraft.All CFD code incorporates his theorem.Wind tunnels are now being supplanted by CFD because of these codes.The Navier-Stokes Equations of 3-D spherical coordinate system used today in CFD fully embrace Bernoulli and I'd be reluctant to just write him off.
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The thing about aeronautics and wings,is that they do not apply to automobiles.It's improper to reference them.