초록 ▼

A quasi-isotropic composite structure includes a multi-sheet rib projecting generally perpendicular to a multi-sheet body with at least one of the body face sheets being bent and attached in a parallel manner to the rib sheet or sheets. The sheet or sheets that are part of both the body and rib are

A quasi-isotropic composite structure includes a multi-sheet rib projecting generally perpendicular to a multi-sheet body with at least one of the body face sheets being bent and attached in a parallel manner to the rib sheet or sheets. The sheet or sheets that are part of both the body and rib are unsevered and integrally contiguous.

대표청구항 ▼

[ What is claimed is:] [1.] A composite structure comprising:a body;a rib extending generally perpendicular to said body;said body including:a first body sheet of composite material having substantially unidirectional fibers extending at an angle of about 90 degrees relative to a reference sheeting

[ What is claimed is:] [1.] A composite structure comprising:a body;a rib extending generally perpendicular to said body;said body including:a first body sheet of composite material having substantially unidirectional fibers extending at an angle of about 90 degrees relative to a reference sheeting direction;a second body sheet of composite material having substantially unidirectional fibers extending at an angle of about 0 degrees relative to said reference sheeting direction;a third body sheet of composite material having substantially unidirectional fibers extending at an angle of about 90 degrees relative to said reference sheeting direction, said second body sheet being sandwiched between said first and third body sheets;said rib including:a first rib sheet placed against said second body sheet so as to extend generally perpendicularly therefrom, said first rib sheet being formed of a composite material having substantially unidirectional fibers extending at an angle of about 90 degrees relative to said reference sheeting direction;a second rib sheet disposed against said first rib sheet and being formed of a composite material having substantially unidirectional fibers extending at an angle of about 0 degrees relative to said reference sheeting direction;a third rib sheet disposed against said second rib sheet and being formed of a composite material having substantially unidirectional fibers extending at an angle of between about 0 degrees and -90 degrees relative to said reference sheeting direction;a fourth rib sheet disposed against said third rib sheet and being formed of a composite material having substantially unidirectional fibers extending at an angle of between about 0 degrees and 90 degrees relative to said reference sheeting direction; andsaid first body sheet having a first portion extending parallel to said reference sheeting direction and a second portion extending perpendicular to said first portion, said second portion being disposed against one of said rib sheets to form an outer surface therefor.