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Aerodynamic principles of the direct lifting propeller (1934)
NASA Technical Reports Server (NTRS) · leaf 70
Pigs. 19,20,21 Ij.A.CA. Technical Memorandum Ho. 733 … 1.2 100c wp 1.1 1.0 1/4 p s/4 Figure 20,-Resolution of flow velocity plotted against profile drag coefficient.NASA Technical Reports Server (NTRS)
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