It is pointed out that assumption that ribs are connected to spars by flexible joints is not accurate, as they are attached very firmly to spars by means of brackets, nails and glue; investigation to determine what effect this type of joint has on strength of spars.
Influence of ribs on strength of spars
U. S. Nat. Advisory Committee Aeronautics, Technical Notes
1923
18 pages
12 Figs., 2 Tables
Aufsatz (Zeitschrift)
Englisch
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