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The effects of partial-span plain flaps on the aerodynamic characteristics of a rectangular and a tapered Clark Y wing (1938)
NASA Technical Reports Server (NTRS) · leaf 8
H.A.G.A. Technical Bote No. 663 - ffig.lNASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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