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On the theory of hydrofoils and planing surfaces (1938)
NASA Technical Reports Server (NTRS) · leaf 31
N.A.C.A. Technical Memorandum No. 845 Figs.1,2,3,4,7,8,9 —— Submerged airfoil. Figure 9.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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