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Preliminary biplane tests in the variable density wind tunnel (1928)
NASA Technical Reports Server (NTRS) · leaf 19
N.A.C.A. Technical Note No.289 Fig.3 … 0 ,04 .08 .12 .16 \20 M 0 4 8 12 16 20 24 L/D Fig.3 Polar and L/D curves. M-6,5" by 30" biplane, 5^ gap, 30 atmosplieres. Average Reynolds No.3,500,000»NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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