초록 ▼

A composite tubular member having an outer generally cylindrical member containing fibers oriented to resist internal and external pressure and provide low bending stiffness, and two inner areas of axial reinforcement located near the neutral axis of the composite tubular members containing fibers o

A composite tubular member having an outer generally cylindrical member containing fibers oriented to resist internal and external pressure and provide low bending stiffness, and two inner areas of axial reinforcement located near the neutral axis of the composite tubular members containing fibers oriented to provide high axial stiffness, high tensile strength and low bending stiffness; and fibers oriented to resist shear stress, positioned opposite each other within the walls of the outer member. These inner areas define a minor moment of inertia of bending extending diametrically through said inner areas and a major moment of inertia of bending generally orthogonal to said minor moment of inertia. Energy conductors integral to the tubular member are arranged in a plane along the minor moment of inertia formed in the tubular member.

대표청구항 ▼

[ We claim:] [1.] A composite tubular member extending along an axis, said composite tubular member comprisinga tubular composite layer containing cross-plied fibers contained within a binder for holding together said fibers, about 90 to about 95 percent of said fibers being oriented at approximatel

[ We claim:] [1.] A composite tubular member extending along an axis, said composite tubular member comprisinga tubular composite layer containing cross-plied fibers contained within a binder for holding together said fibers, about 90 to about 95 percent of said fibers being oriented at approximately .+-.40.degree. to approximately .+-.70.degree. relative to the axis of the tubular member, andsubstantially impermeable material lining the inner surface of said composite tubular member thereby forming a pressure chamber.