File:Déversement tourbillons par un corps ogivo-cylindrique, Jorgensen.png
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Summary[edit]
DescriptionDéversement tourbillons par un corps ogivo-cylindrique, Jorgensen.png |
Français : Déversement tourbillons par un corps ogivo-cylindrique, Jorgensen, ce déversement présidant à la portance normale tourbillonnaire telle que formalisée par Allen et Perkins |
Date | |
Source |
Prediction of static aerodynamic characteristics for slender bodies alone and with lifting surfaces to very high angles of attack, Howard Jorgensen, NASA TR R-474, 1977 https://ntrs.nasa.gov/api/citations/19770026166/downloads/19770026166.pdf?attachment=true |
Author | Howard Jorgensen pour la NASA |
Licensing[edit]
Public domainPublic domainfalsefalse |
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
Warnings:
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Annotations InfoField | This image is annotated: View the annotations at Commons |
Si l'on effectue une section normale du corps ogivo-cylindrique, on obtient, aux faibles incidences :
Pour les incidences plus fortes (supérieures à 5 ou 10°), le lâché de tourbillons devient dissymétrique et proche de celui, bien connu, existant à l'aval du cylindre infini placé dans un écoulement perpendiculaire à son axe ; ce lâché de tourbillon dissymétrique donne lieu à un nombre de Strouhal (voir aussi à ce sujet cet article).
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current | 21:44, 23 January 2021 | 897 × 445 (47 KB) | Bernard de Go Mars (talk | contribs) | Uploaded a work by Howard Jorgensen pour la NASA from Prediction of static aerodynamic characteristics for slender bodies alone and with lifting surfaces to very high angles of attack, Howard Jorgensen, NASA TR R-474, 1977 https://ntrs.nasa.gov/api/citations/19770026166/downloads/19770026166.pdf?attachment=true with UploadWizard |
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Horizontal resolution | 37.8 dpc |
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Vertical resolution | 37.8 dpc |