Flanges reinforced with bulbs widely used in aircraft structures to stiffen stressed-skin cover; also used as stiffening element of wing beams with I-section; solutions given for 54 flange sections reinforced by rectangular and circular bulbs; buckling stress given as function of flange length.
Instability of outstanding flanges simply supported at one edge and reinforced by bulbs at other edge
Nat Advisory Committee Aeronautics -- Tech Note
1947
25 pages
Report
English
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