File:Portance théorique et mesurée selon TN 228 et NACA TM 323.gif

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Français : Portance théorique (Kutta-Joukowski) et portance mesurée selon TN 228[1] et NACA TM 323[2]. Les mesures de Cy du NACA TM 323 ont été reportées sur le graphe du TN 228. Curieusement, le Cy du cylindre fini cité par le TM 323 est plus fort que celui du TN 228 (censé être mesuré en écoulement 2D). Quoiqu'il en soit, le Cy calculé par la théorie apparaît comme irréaliste. Il faut dire que cette théorie (raisonnant en non-visqueux) considère le fluide comme entraîné par le cylindre du fait de la viscosité du fluide. Le TN 228 constate d'ailleurs que l'entraînement du fluide admis dans la théorie (la circulation) est irréaliste...
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Author Bernard de Go Mars

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  1. NACA TN 228, The Flettner rotor ship, Kutta-Joukowski theory and experimental results, F. Rizzo, [1]
  2. NACA TM 323, Recent experiments at the göttingen aerodynamic institute, Ackeret [2]
  3. NACA TN 228, The Flettner rotor ship, Kutta-Joukowski theory and experimental results, F. Rizzo, [3]

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Date/TimeThumbnailDimensionsUserComment
current11:44, 15 November 2022Thumbnail for version as of 11:44, 15 November 2022693 × 625 (142 KB)Bernard de Go Mars (talk | contribs)Uploaded own work with UploadWizard

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