WHEN the Italian Air Ministry decided to build a research station at Guidonia for the study of high speeds, work of this kind had already been initiated at the main aerodynamical centres throughout the world, but as a rule the apparatus had been made by means of adaptations and expedients and in no case had the problem been satisfactorily solved.
Ferri, A. (1940), "The Guidonia High‐Speed Tunnel: A Description of the Italian Wind Tunnel Built for Super‐Sonic Research", Aircraft Engineering and Aerospace Technology, Vol. 12 No. 10, pp. 302-306. https://doi.org/10.1108/eb030700
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