Full Scale Drag Tests on Various Parts of Sperry Messenger Airplane (1928)
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7 8 9 10 11 12 13 14- 15 16 17 18 19 20 21 22 23 24 35 36 1 I i i ! : I I i I ! I I ; _J J \ \ \ J 95 100 50 55 60 65 70 7o 80 a'5 90 Air speed,miles per hour Fig.5 Drag of Sperry Messenger without wings or propeller. cn
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