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File:Plaque Laboratoire aérodynamique Eiffel, 67 rue Boileau, Paris 16.jpg

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Français : Plaque commémorative, Laboratoire aérodynamique Eiffel, 67 rue Boileau, Paris 16e.
Historical Mechanical Engineering Landmark.
Eiffel 1903 Drop Test Machine and 1912 Wind Tunnel.
Gustave Eiffel (1832-1923) débute ses essais aérodynamiques en laissant tomber du deuxième étage de la tour des objets de formes géométriques diverses, guidés par un câble vertical et reliés à un appareil qui mesure et enregistre à la fois la résistance de l'air et la vitesse de chute des objets.
L'aviation incite Eiffel à construire en 1909 une première soufflerie aérodynamique au pied de la tour. Il y teste au « point fixe » les mêmes corps et valide le concept essentiel de mouvement relatif.
La deuxième soufflerie, construite à Auteuil en 1912, se caractérise par une chambre d'essais fermée, donnant sur une veine expérimentale guidée à l'aval dans l'atmosphère par un diffuseur conique. Cette innovation, brevetée en 1912, améliore les performances du « système aérodynamique Eiffel » et assure son succès auprès d'innombrables laboratoires.
La soufflerie d'Auteuil est le plus ancien laboratoire d'essais aéronautiques, toujours en état de marche.
ASME [American Society of Mechanical Engineers]. 2005.
English: Commemorative plaque, Laboratoire Aérodynamique Eiffel, 67 Rue Boileau, Paris 16th.
Historical Mechanical Engineering Landmark.
Eiffel 1903 Drop Test Machine and 1912 Wind Tunnel.
Gustave Eiffel (1832-1923) began aerodynamic testing by dropping various body shapes attached to a drop test machine guided by a vertical cable suspended from the Eiffel Tower. This machine measured and recorded the drag of the bodies and the drop velocity. It was the most advanced device of its type.
Eiffel built his first wind tunnel beside the Tower in 1909. By testing the same bodies he had drop tested, Eiffel validated the concept of relative motion.
The 1912 wind tunnel of Auteuil featured an open jet of air within a closed test chamber and introduced a downstream diffuser. This innovation, patented in 1912, improves the efficiency of the "Eiffel aerodynamic system" whose features were emulated in many later tunnels.
The Auteuil laboratory is the most complete early aeronautical laboratory in existence and still in operation.
ASME [American Society of Mechanical Engineers]. 2005.
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current15:43, 24 October 2020Thumbnail for version as of 15:43, 24 October 20202,562 × 1,875 (3.52 MB)Paris 16 (talk | contribs)perspective
10:08, 12 October 2010Thumbnail for version as of 10:08, 12 October 20102,525 × 1,870 (3.11 MB)Mu (talk | contribs){{Information |Description={{fr|1=Plaque commémorative, Laboratoire aérodynamique Eiffel, 67 rue Boileau, Paris 16{{e}}.}} |Source={{Own}} |Author=Wikimedia Commons / Mu |Date=2010-06-13 |Permission= |other_versions=[[File:Labo

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