The invention relates to a blade of a fan of a turbomachine, comprising a structure made from composite material, including a fibrous reinforcement obtained by means of the three-dimensional weaving of strands and a matrix in which the fibrous reinforcement is embedded,—the fibrous reinforcement comprising a first portion forming the leading edge and a second portion forming all or part of the trailing edge,—the strands of the fibrous reinforcement comprising first strands having a predetermined elongation at break and second strands having an elongation at break higher than that of the first strands, the first portion comprising all or some of the first strands while the second portion comprises all or some of the second strands.

A wind turbine blade capable of being easily manufactured and improving structural strength, and a wind turbine including the same are provided. The wind turbine blade includes an outer skin defining an external appearance, an inner skin spaced apart from the outer skin, a plurality of spar caps positioned between the outer skin and the inner skin and spaced apart from each other in a thickness direction of the blade, and shear webs configured to connect the plurality of spar caps, wherein at least one of the plurality of spar caps has a structure in which a resin is impregnated with reinforcing fiber sheets, and the other spar caps each have a structure in which support plates including reinforcing fibers are stacked.

A shaving razor with an angled wash through channel. A razor blade is sandwiched between a base member and a blade cover. The based member is unitarily molded to include an integral blade guard that resides ahead of a cutting edge of the razor blade in a cutting direction, the base member also defines a wash through channel opening at an angle in the range of 30-70 degrees.

A mandrel for a molding process includes a first portion and a second portion that form a mandrel having a channel between the first and second portions. At least one locking pin is configured to urge the first and second portions away from each other to establish a gap in response to inserting the locking pin into the channel along a respective end of the mandrel. A molding apparatus and method of forming a matrix composite component are also disclosed.

A process for manufacturing a blade made of composite material for a turbomachine. The blade includes an airfoil having a pressure side and a suction side which extend from a leading edge to a trailing edge of the airfoil. The blade further includes a metal sheath that extends along the leading edge of the airfoil. The process includes the steps of: placing a preform, produced by three-dimensionally weaving fibers, in a mold, the sheath being positioned on an edge of the preform intended to form the leading edge of the airfoil; and injecting polymerizable resin into the mold to impregnate the preform so as to form the airfoil after solidifying. At least one double-sided adhesive film may be inserted between the sheath and the edge of the preform prior to injection of the resin.

A device for moulding at least one bladed part of a turbomachine, including a base, a mould formed from several parts that are interlocked with each other, this mould being applied to the base and first sealing means being mounted between the mould and the base, a bell-shaped dome mounted on the mould and around the mould, this bell-shaped dome being applied to the base and second sealing means being mounted between the bell-shaped dome and the base, this bell-shaped dome being configured to be held clamped against the base and including inner surfaces cooperating by corner effect with complementary outer surfaces of the mould in order to apply a clamping force on the parts of this mould.

A device for shaping at least one fibrous preform for producing a bladed part of a turbomachine, this device including a mould formed by several parts that are interlocked with each other, this mould defining at least one internal cavity configured to receive the preform and to enclose the preform integrally, this cavity being intended to have two platform areas and a blade area extending between the two platform areas, wherein the mould includes at least a lower shell, an upper shell, a side shell, and end shells, and in that each of the side and end shells includes three elements, respectively lower, intermediate and upper.

Provided is a rotor blade of a wind turbine, wherein the rotor blade includes a trailing edge section with a trailing edge and a leading-edge section with a leading-edge, a root section with a root and a tip section with a tip, a shell which defines the outer shape of the rotor blade and a cavity which is confined by the shell, and a lightning protection system with an internal down conductor extending from the root section of the rotor blade to the tip section of the rotor blade, wherein the internal down conductor is connectable at the root section to a grounding system of the remainder of the wind turbine and at the tip section to at least one tip lightning receptor which is positioned at the surface of the rotor blade. In addition, the rotor blade comprises an electrically insulating tip part.

A polymer airfoil assembly is disclosed and includes at least one cooling passage for circulating coolant to remove heat from the polymer airfoil portion.

The present invention relates to a fan blade (3) having a structure made from a composite material, comprising a fibrous reinforcement (5), which is obtained by three-dimensional weaving of warp strands and weft strands, and a matrix in which the fibrous reinforcement (5) is embedded, wherein—the fibrous reinforcement (5) comprises a first portion (14) forming the trailing edge (9) of the structure made from a composite material and a second portion (15) forming its leading edge (8), and wherein—the warp strands of the fibrous reinforcement (5) comprise first strands (12) having a predetermined stiffness and second strands (13) having a greater stiffness than that of the first strands (12), the first portion (14) comprising all or part of the first strands (12) and being devoid of second strands (13) while the second portion (15) comprises all or part of the second strands (13).