The Torsion of Members Having Sections Common in Aircraft Construction (1930)
NASA Technical Reports Server (NTRS) · leaf 15
14 REPORT NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS (d) The Equilateral Triangle: Origin at centroid. Side a— Corresponding solutions are known for a sector of a circle, a curvilinear rectangle bounded by two concentric circular arcs and two radii, figures bounded by confocal ellipses and… … Figure 5.—The distortion of plane sections in an elliptical rod and the absence of such distortion in a circular rod figures shaped like a square but with concave sides and either rounded or sharp corners, and a section somewhat resembling the section of a railway rail. (References 4, 5, and 6.)…
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