NO. 3 EUROPEAN AERONAUTICAL LABORATORIES ZAH]M 3 



fluid dynamics, the theory of gyroscopes, aeroplane and dirigible 

 design — whatever studies will promote the art of air craft construc- 

 tion and navigation may be prosecuted by this committee. A detailed 

 program and the results of actual investigations have been pub- 

 lished in the annual re])ort of this committee. 



.1/. Eiffel has paid from his personal fortune all the expenses of 

 his plant and elaborate researches, though it is understood that he 

 may sometimes charge nominal fees for investigations made for 

 private individuals who wish exclusive rights to the data and results 

 obtained. The general director of the laboratory is Eiffel himself — 

 who initiates the researches and publishes the results. He has in 

 immediate charge two able engineers, MM. Rith and Lapresle, aided 

 by three trained observers who are skilled draughtsmen. Two 

 mechanics and one janitor complete the personnel. The work of the 

 laboratory is all indoors, and is confined to researches in aerodv- 

 namics alone, or more specifically to wind-tunnel measurements and 

 reports thereon. 



The institute at St. Cyr was founded by Deutsch de La Meurth, 

 who gave $100,000 for the original plant and has provided $3000 per 

 year, during his life, for maintenance. It was presented by him to 

 the L'niversity of Paris, and is now under the general direction of the 

 professor of physics, M. Maurain, aided by a technical stafif and a 

 large advisory council of eminent engineers, scientists and ofificers of 

 the university, ofificers of the French government and members of 

 various clubs and aeronautical organizations. The stafif comprises 

 the director in charge and his assistant, together with such students, 

 two or three at a time, as may come as temporary volunteers from 

 the University of Paris. 



The institute conducts large-scale experiments in the open tield as 

 well as indoor researches, makes investigations for general publica- 

 tion or for private interests, on payment of suitable fees, and per- 

 mits private persons to conduct researches in the laboratory. The 

 scope of the work is practically unlimited, as is the case in the English 

 aeronautical laboratories. A special feature of the institute is its 

 three-quarter mile long track with electric cars for tests on large 

 screws, large models and full-size aeroplanes. 



TJie Gottingen aerodynamical laboratory was begun as a private 

 enterprise, but is now to be enlarged and maintained in part by finan- 

 cial aid of the Kaiser Foundation. The original building", with its 

 wind-tunnel, was erected in 1908 after the plans of its director. Prof. 

 Prandtl. of the Universitv of Gottingen, at a cost of 20,000 marks. 



