Wing spar stress charts and wing truss proportions (1926)
NASA Technical Reports Server (NTRS) · leaf 11
(surely as large a ratio as would ever be reached in a two-bay machine in practice), while Figure 18 presents similar data for a spar length of 3 times the gap and a gap-spar depth ratio of 20. When Lt/Q is 3 and G/d is 8 the column effect is so small as to be negligible. In cal- culating these… … Percent length of inner bay portion of direct compressive stress to total stress. DISCUSSION OF CURVES—BENDING MOMENTS Inspection of the curves in Figures 1 and 2 reveals certain interesting characteristics of the variation of bending moment with the proportions of the truss which are not at once…
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