Rib of composite material and method of forming the same

Details Rib of composite material and method of forming the same Rib of composite material and method of forming the same

1998-03-06

2000-09-05

Robinson, Ellis

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

428174, 428122, 527201, 527391, 527332, 244119, 244123, 264258, 264324, B32B 328, B32B 330

Patent

active

061140120

ABSTRACT:
A rib of a composite material for a box structure such as an airfoil has, in an integral structure, a web and flanges formed so as to extend along opposite longitudinal side edges of the web. The web is provided with a plurality of parallel first ridges or beads formed so as to extend across the web and to protrude outward from the outer surface of the web, and each of the flanges is provided with a plurality of parallel second ridges formed so as to extend across the flange, to protrude inward from the outer surface thereof and to merge into the corresponding first ridges. The structure eliminates causes of wrinkles and provides an increased strength.

REFERENCES:
patent: 2102936 (1937-12-01), Bailey

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