Air Force Tests of Sperry Messenger Model with Six Sets of Wings (1928)
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9 TESTS OF SPEEEY MESSENGEE MODEL WITH SIX SETS OF WINGS ]cJve\ | | |_L_L_i_ Curve I 1.6 … 8° 12° 16° 20° -8° -4° -8° -4° Angle of attach, cc Angle of attack, a curves of S. M. model with IT. B. A. 27 wings and no Fig. 17.—Characteristic Fig. 16—Characteristic curves of S. M. model with Gottingen 387 wings and no propeller propeller i r i i i Curve I U.I I I l-LM-i l ' i i | 'Tank…
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