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Pressure-distribution measurements on a rectangular wing with a partial-span split flap in curved flight (1939)
NASA Technical Reports Server (NTRS) · leaf 10
Fig. 2b N.A.C.A. Technical Note No. 74£ … oUpper surface x Lower surface (b) Wing with a 25 percent span split flap deflected 60° Figure 2.- Continued,NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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