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Pressure Distribution Tests on PW-9 Wing Models from -18 Degree Through 90 Degree Angle of Attack (1929)
NASA Technical Reports Server (NTRS) · leaf 19
18 REPORT NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS … Fig. 23.—Semispan loadingNASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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