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The Effect of the Sperry Messenger Fuselage on the Air Flow at the Propeller Plane (1928)
NASA Technical Reports Server (NTRS) · leaf 7
K.A.C.A. Technical Note No.274 , Fig.2. … Fig.4 General arrangement drawing of Sperry Messenger airplane.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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