Patent FR-1911-436934
An epsacenet record exists but lacks title or scan. I think we can infer the title and category from the addition FR-1917-436934.21631, which also gives us directly the date of the original and some information about it:
La disposition de laboratoire d'essais pour modèles d'aéroplanes ou d'hélices décrite dans le brevet № 436.934 est caractérisée en principe par ce fait que la chambre, où sont placés les modèles à essayer, est reliée par un diffuseur conique allongé à un ventilateur de diamètre de l'ouverture de la chambre, ce ventilateur pouvant être suivi lui même d'un second diffuseur. Cette disposition permet de réduire très notablement la puissance nécessaire pour faire fonctionner le ventilateur.
The technology here described reflects (more or less) the actual designs of two wind tunnels built by Eiffel, the first at the Champs-de-Mars in 1909, the second at Auteuil. He was actually successful in reducing the power required to operate the wind tunnel at his second plant; the design of both tunnels was hailed as setting a new standard of precision in aerodynamic experiments.[1]
References
- ↑ Dijana Damljanović, "Gustave Eiffel and the Wind: A Pioneer in Experimental Aerodynamics", Scientific Technical Review (2012), Vol. 62, No. 3–4, pp. 3–13.
Patent family descending from Patent FR-1911-436934
- Patent BE-1912-250450 (English title: Laboratory for trials of model airplanes and propellers, Supplementary to patent: Patent FR-1911-436934, National tech categories: BE K)
- Patent FR-1911-436934 (English title: Laboratory for trials of model airplanes and propellers, National tech categories: FR 12.3)
- Patent FR-1917-436934.21631 (English title: Laboratory for trials of model airplanes and propellers, Supplementary to patent: Patent FR-1911-436934, National tech categories: FR 12.3)
Year filed | 1911 |
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Year granted | |
Office | FR |
Patent number | 436934 |
Inventors | Gustave Eiffel |
Inventor country | FR |
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Applicant type | INDIV |
Applicant is inventor? | 1 |
Original title | Disposition d'un laboratoire d'essais pour modèles d'aéroplanes ou hélices |
English title | Laboratory for trials of model airplanes and propellers |
Tech fields | aerodynamics, airplane, propeller, wind tunnel |
Filing date | 1911-11-28 |
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Granted? | 1 |
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Supplementary to patent | |
Related to aircraft? | 1 |
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National tech categories | FR 12.3 |
IPCs | IPC G01M9/00 |
CPCs | CPC G01M9/00 |
Family year | 1911 |
First filing? | 1 |
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