Inside Out Library · ExploreDrag Tests of 4/9-Scale Model Engine Nacelles with Various Cowlings (1932)NASA Technical Reports Server (NTRS) · leaf 14U.A.C.A. Technical Note ITo. 432 … Fig.3 Ring cov/lings.NASA Technical Reports Server (NTRS)Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.More pictures from Drag Tests of 4/9-Scale Model Engine Nacelles with Various CowlingsMore like this
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