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Old 05-15-2020, 10:54 AM   #37 (permalink)
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streamlined bodies and lift

On page 22,Fig.1.12.,of Hermann Schlicting's 'Boundary-Layer Theory',you'll find a complete pressure profile of a streamline body,presented originally by Fuhrmann.
You'll notice the positive static pressure acting on both the nose and tail,allowing for zero lift.
On page 23,Fig.1.14. you'll find a complete pressure profile of a Zhukovskii wing section,demonstrating a zero-lift condition (just as the 118-families of wing sections listed in Theory of Wing Sections) ,after the research of A. Betz.
If 'the exception proves the rule',then,when you make statements about the existence of lift for wings and streamline bodies,you'll want to include all the qualifying caveats/conditions.
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