Mixer for an engine manufactured from at least one composite material, manufacturing method and manufacturing device

A method for manufacturing a mixer for an engine for mixing fluid flows from a primary flow channel and a secondary flow channel, comprising:

• forming the mixer from a composite material including at least two material layers that respectively contain fibers, wherein each of the at least two material layers include edges, and wherein the mixer includes:
• a plurality of first guide elements, each including at least one radially outwardly extending section with respect to a central axis of the mixer;
• a plurality at second guide elements respectively positioned adjacent to the first guide elements, wherein each second guide element includes at least one radially inwardly extending section, and wherein the first guide elements and the second guide elements alternate along a circumferential direction of the mixer and extend axially with respect to the central axis of the mixer;
• a common side wall shared by adjacent ones at the first guide elements and the second guide elements, wherein the common side wall extends between a radially outermost section of the first guide element and a radially innermost section of the second guide element;
• wherein the edges of the at least two material layers are arranged along the central axis of the mixer in at least one of an overlapping manner for at least a local stiffening of a structure of the mixer and edge to edge for at least a local reduction in stiffness of the structure of the mixer;
• and
• wherein the edges of the at least two material layers are arranged along the central axis of the mixer at the common side wall in an overlapping manner to form a local thickening of a portion of the common side wall extending axially, wherein the local thickening locally stiffens the structure of the mixer, and wherein the edges of the at least two material layers extend in the axial direction, the circumferential direction, and the radial direction, and wherein the edges of the at least two material layers extend in a curved manner with respect to at least two spatial axes that are perpendicular to each other.