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A Complete Tank Test of the Hull of the Sikorsky S-40 Flying Boat - American Clipper Class (1934)
NASA Technical Reports Server (NTRS) · leaf 18
Figs. 4,5 N.A.C.A. Technical Note No.512 12 16 20 24 28 32 36 40 44 48 52 56NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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