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In fluid dynamics, the drag crisis (also known as the Eiffel paradox [1]) is a phenomenon in which drag coefficient drops off suddenly as Reynolds number increases. This has been well studied for round bodies like spheres and cylinders. The drag coefficient of a sphere will change rapidly from about 0.5 to 0.2 at a Reynolds number in the range ...
Gustave Eiffel is recognised as one of the precursors of experimental aerodynamics, particularly for aeronautics. [ 3 ] As early as 1915, Gustave Eiffel put his facilities and knowledge at the service of the Peugeot Company to improve the performance of a racing car.
Alexandre Gustave Eiffel was born in France, in the Côte-d'Or, the first child of Catherine-Mélanie (née Moneuse) and Alexandre Bonickhausen dit Eiffel. [6] He was a descendant of Marguerite Frédérique (née Lideriz) and Jean-René Bönickhausen, who had emigrated from the German town of Marmagen and settled in Paris at the beginning of the 19th century. [7]
From Eiffel wind tunnel studies. Fossati presents polar diagrams that relate coefficients of lift and drag for different angles of attack [ 8 ] based on the work of Gustave Eiffel , who pioneered wind tunnel experiments on airfoils, which he published in 1910.
The 95-foot-wide, 43-foot-high rings create a “strong imbalance” and “substantially modify the very pure forms of the monument as designed by Gustave Eiffel and his teams more than 135 years ...
The Eiffel firm had advance knowledge of the project and, beginning in 1884, had already designed a tower exactly to those dimensions. The structural design was created by two Eiffel engineers, Maurice Koechlin and Émile Nouguier, who along with Eiffel himself, received the patent for the plan.
Built for the 1889 World’s Fair — which celebrated the 100th anniversary of the French Revolution — engineer Gustave Eiffel’s tower was only intended to stand for 20 years.
Drawing of Ducretet in 1898, celebrating his November 5, 1898 transmission of radio signals between the Eiffel Tower and the Panthéon.. Eugène Adrien Ducretet (November 27, 1844 – 1915) was a French scientific instrument manufacturer, who performed some of the first experiments on wireless telegraphy (radio communication) in France.