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Full-Scale Tests of NACA Cowlings (1937)
NASA Technical Reports Server (NTRS) · leaf 18
15 FULL-SCALE TESTS OF N. A. C. A. COWLINGS … Figure 15—The effect of the propeller on pressure distribution at several air speeds.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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