Pomilio, Ottorino · New York, McGraw-Hill · leaf 26
andpositive pressures of air, a conflic-tion of air flow is formed over theentire wing surface, with the resultthat the value of the Lift coefficientis lowered. Figs. 12 and 13 illus-trate this phenomenon for a biplaneand triplane respectively. In thecase of the biplane, the followingeffects ensue:… … 12 AIRPLANE DESIGN AND CONSTRUCTION 1. Decrease in vacuum on top of bottom plane, 2. Decrease in positive pressures on bottom of inter-mediate plane, 3. Decrease in vacuum on top of intermediate plane, and 4. Decrease in positive pressures on bottom of upperplane. It is thus seen how undesirable,…
Airplanes
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