File:Corps Sphéro-coniques d'Eiffel, labo Champ de Mars p WikiCommons.png
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Summary[edit]
DescriptionCorps Sphéro-coniques d'Eiffel, labo Champ de Mars p WikiCommons.png |
Français : Dans une publication de 1912, Eiffel approche le corps de moindre traînée avec ce corps sphéro-conique.
English: In a publication of 1912, Eiffel approaches the body of least drag with this spherical-conical body. |
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Date | (original); 2019-05-12 (modifications) | |||||||||||||||||||||||
Source | http://cnum.cnam.fr/redir?8CA440 + Own work | |||||||||||||||||||||||
Author |
creator QS:P170,Q20882 (original); Bernard de Go Mars (modifications) |
Licensing[edit]
Public domainPublic domainfalsefalse |
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. | |
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
Annotations InfoField | This image is annotated: View the annotations at Commons |
Pour obtenir le Cx adimensionnel moderne, il suffit de multiplier le coefficient K d'Eiffel (qui n'était pas adimensionnel) par 16,016.
On constate que, présenté dans le bon sens (gros bout devant), le corps sphéro-conique d'Eiffel présente un Cx à peu près double de celui des corps 3D de moindre traînée "en couche limite turbulente" modernes (Cx ~0,04), ceci du fait du meilleur profilage de ces derniers.
Les coefficients K et les Cx sont ici en référence à la surface frontale des corps.
Ces deux flèches représentent le sens du vent de la soufflerie (qui va donc de droite à gauche).
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current | 09:43, 12 May 2019 | 937 × 591 (226 KB) | Bernard de Go Mars (talk | contribs) | User created page with UploadWizard |
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Horizontal resolution | 37.8 dpc |
Vertical resolution | 37.8 dpc |
File change date and time | 16:24, 6 May 2013 |
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