PHYSICISTS are well acquainted with the relationship which exists between naval and the aeronautical problems. Although the specific gravity of water is a thousand times greater than that of air, the similitude in their flow goes beyond the limits of mathematical analysis; but experiments in water, which have the advantage of being easy of application, although requiring certain precautions, have yielded a number of conclusions that have proved useful in the case of sections and other component parts of aeroplanes.
Kahn, L. (1931), "Aircraft and Naval Technique: A Study of the Relationship Existing Between the Two in Design and Operation", Aircraft Engineering and Aerospace Technology, Vol. 3 No. 9, pp. 221-224. https://doi.org/10.1108/eb029447
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