The Interference Between Struts in Various Combinations (1934)
NASA Technical Reports Server (NTRS) · leaf 9
th the strut perpendicular to These tests are probably more valuable for demon- the 25.25-inch chord plane the interference drag is zero, strating flow conditions than for any general applica- but it increases gradually with decreases in angle tion. between strut and plane. For an angle of 20° the… … Curve A, rear strut in presence of front strut. Figure 6.—Effect of side-by-side spacing on interference Curve B, front strut in presence of rear strut. drag of cylinders. Air speed, 80 m.p.h. Curve C, total interference drag. Figure 7.—Effect of tandem spacing on interference drag of streamline…
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