Curved structural part made of composite material and a process for manufacturing such a part

A structural part curving along a length of the part, said curved structural part comprised of a composite material reinforced with continuous fibers, said curved structural part having a section which includes at least two wings, with said fibers extending over the at least two wings,

• said length of said curved structural part having a greater extent than a width of said curved structural part and a length of said wings having a greater extent than a width of said wings, said widths being locally perpendicular to said lengths, said curved structural part and said wings further each having a thickness extending generally perpendicular to said widths and said lengths, the thicknesses having a lesser extent than said widths,
• at least one of the wings of said curved structural part including a region of the at least one wing with a first full width of said at least one wing along a length of the at least one wing and including a second full width of said same at least one wing along a second, different but adjacent region of the part comprising a local increase in the width of said at least one wing in a section parallel to a local radius of curvature as compared to the first full width of said at least one wing,
• wherein, in the same second region of the at least one wing, the thickness of the same at least one wing is increased relative to the thickness of the same at least one wing adjacent to the second region,
• the increase of the thickness of the same at least one wing being provided by a gradient of approximately 0.2.

A structural part curved along a length of the part, said curved structural part comprised of a composite material reinforced with continuous fibers, said curved structural part having a section which includes at least two wings, with said fibers extending over the at least two wings,

• said length of said curved structural part having a greater extent than a width of said curved structural part and a length of said wings having a greater extent than a width of said wings, said widths being locally perpendicular to said lengths, said curved structural part and said wings further each having a thickness extending generally perpendicular to said widths and said lengths, the thicknesses having a lesser extent than said widths,
• at least one of said wings of said curved structural part having a first full width along a length of the at least one wing and including a region of the same at least one wing with a second full width along a second, different but adjacent length of the at least one wing comprising a local increase in the width of a section parallel to a local radius of curvature as compared to the first full width,
• the local increase in the width of the section of the at least one wing being provided with a gradient in the range of 0.07 and 0.15,
• wherein, in the same region of the at least one wing, the local increase in the width of the section is an increase in the first full width in a direction towards an interior of a curve of the curved structural part without an increase in the first full width of the at least one wing in a direction towards an exterior of the curve of the curved structural part,
• wherein, in the same region of the at least one wing, the thickness of the at least one wing is increased relative to the thickness of the at least one wing adjacent to the region,
• the increase of the thickness of the at least one wing being provided by a gradient of approximately 0.2,
• the orientation of the fibers in each stratum being maintained within 3° of their nominal orientation.