Abstract: A fiber reinforced composite member molding apparatus includes a pair of molds for clamping prepreg formed of long carbon fibers impregnated with resin, induction heating coils for heating thermoplastic resin contained in the prepreg via the molds, and cooling passages for cooling the resin via the molds after the resin is melted, wherein the molds each have a design surface brought into contact with the layered prereg, the design surface being divided into a plurality of regions, and a plurality of cells provided along the design surface to be open at the back of the design surface and individually correspond to the regions of the design surface, the induction heating coils are arranged in the cells, and the cooling passages are formed in each of the molds to run along the design surface.

Abstract: An electric conduction structure for conducting and diverting electric current from a vane main body of an cutlet guide vane into en exterior support structure is comprised of: a sheath of a metal covering a leading edge of the vane main body; and an electrically conductive pad of the metal comprising a contact portion so dimensioned as to have an overlap with an end of the sheath, and a washer portion into which a bolt for being tightened into the support structure is insertable, wherein any joints of a weld, a spot-weld, a solder, a bond by an electrically conductive paste and a crimp establish connection between the end of the sheath and the contact portion.

Abstract: A composite vane body formed of a composite material of a thermosetting resin or a thermoplastic resin, and reinforced fibers, and a metal sheath that is bonded to a leading edge section of the composite vane body via a soft adhesive to cover the leading edge section are included, and an adhesive filling section in which the soft adhesive is filled, a plurality of leading edge side contact sections that come into contact with a curved section corresponding to a leading edge of the metal sheath, and a plurality of protrusions that come into contact with a planar section corresponding to a vane surface of the metal sheath, with at least a same height as a thickness of a layer of a requisite amount of the soft adhesive filled in the adhesive filling section are formed in the leading edge section of the composite vane body. Attachment of the metal sheath to the leading edge section can be performed easily with high precision.

Abstract: A fiber reinforced composite member molding apparatus including a lower mold with a cavity, an upper mold with a core for clamping layered prepreg to the cavity, cartridge heaters for heating the layered prepreg via the lower mold and the upper mold, and cooling medium passages for cooling the layered prereg via the lower mold and the upper mold, the lower mold and the upper mold being brought nearer to each other according to shrinkage of thermoplastic resin contained in the layered prereg during cooling, further includes pins moved into and out of the cavity, cylinders for moving the pins into and out of the cavity, and a controller for causing the pins to project into the cavity to come into contact with and apply pressure to the layered prepreg during cooling. The apparatus can mold a fiber reinforced composite member without producing delamination in a thicker end portion of the layered prepreg without an increase in molding time.

Abstract: A fiber reinforced composite member molding apparatus includes a pair of molds for clamping layered prepreg, or stacked sheets of prepreg formed of long carbon fibers impregnated with resin, induction heating coils for heating thermoplastic resin contained in the prepreg via the molds, and cooling passages for cooling the resin via the molds after the resin is melted, wherein the molds each have a design surface brought into contact with the layered prereg, the design surface being divided into a plurality of regions, and a plurality of cells provided along the design surface to be open at the back of the design surface and individually correspond to the regions of the design surface, the induction heating coils are arranged in the cells, and the cooling passages are formed in each of the molds to run along the design surface. This configuration allows the molds to have sufficient rigidity and produces a uniform temperature distribution in heating and cooling.

Abstract: A fan rotor blade includes a blade body made from a composite material of a resin and fibers, and having a pressure surface and a suction surface. A dovetail capable of being fitted into a fitting groove in a fan disk is provided in a base end of the blade body. The blade body is provided with a sheath. The sheath is more rigid than the blade body and is fixed to the blade body in a state where the sheath covers a leading edge portion of the blade body and the vicinity thereof. The sheath extends in the longitudinal direction of the blade body from a blade root side to a tip end side of the blade body, and a base end portion of the sheath located on the blade root side of the blade body extends to the dovetail.

Abstract: A fan rotor blade includes a blade body made from a composite material of a resin and fibers, and having a pressure surface facing one side in a rotation direction and a suction surface facing the other side in the rotation direction. The blade body is provided with a sheath which is more rigid than the blade body and is fixed to the blade body in a state where the sheath covers a leading edge portion of the blade body, which is located on an upstream side in the direction of intake of external air, and the vicinity thereof. A tip end portion of the sheath extends from the leading edge portion side of the blade body to a trailing edge portion side of the blade body. An end portion of the tip end portion of the sheath is flush with the trailing edge portion of the blade body.

Abstract: A composite vane includes a composite vane body that is formed from a composite material of a thermosetting resin or a thermoplastic resin and reinforced fibers, which is obtained by molding, and a metal sheath that is bonded to a leading edge section including a leading edge of the composite vane body and a vane surface in a vicinity of the leading edge via a film adhesive formed by impregnating a mesh with a hard adhesive to cover the leading edge section, wherein an underfill section that is formed in a step of removing excessive thicknesses parts remaining on the leading edge after the molding and does not need leading edge round finish is placed on the leading edge of the leading edge section in the composite vane body. It is possible to realize reduction of manufacturing time and manufacturing cost.

Abstract: An electric conduction structure for conducting and diverting electric current from a vane main body of an cutlet guide vane into en exterior support structure is comprised of: a sheath of a metal covering a leading edge of the vane main body; and an electrically conductive pad of the metal comprising a contact portion so dimensioned as to have an overlap with an end of the sheath, and a washer portion into which a bolt for being tightened into the support structure is insertable, wherein any joints of a weld, a spot-weld, a solder, a bond by an electrically conductive paste and a crimp establish connection between the end of the sheath and the contact portion.

Abstract: A fan rotor blade includes a blade body constructed of a composite material, a blade root constructed of the composite material, and a sheath attached to a leading edge of the blade body. The sheath includes a sheath main body and a pair of joint flanges, and is segmented into a sheath base segment and a sheath top segment. The sheath top segment has a longer length than a length of the sheath base segment along a span direction. A sheath length of the sheath main body at an assumed impact position with an obstacle is not shorter than 10% chord and not longer than 60% chord. A sheath length of the sheath along an end edge of the fan rotor blade is not shorter than 40% chord. The fan rotor blade possesses sufficient impact resistance and can be simplified and light-weighted.

Abstract: A composite vane body formed of a composite material of a thermosetting resin or a thermoplastic resin, and reinforced fibers, and a metal sheath that is bonded to a leading edge section of the composite vane body via a soft adhesive to cover the leading edge section are included, and an adhesive filling section in which the soft adhesive is filled, a plurality of leading edge side contact sections that come into contact with a curved section corresponding to a leading edge of the metal sheath, and a plurality of protrusions that come into contact with a planar section corresponding to a vane surface of the metal sheath, with at least a same height as a thickness of a layer of a requisite amount of the soft adhesive filled in the adhesive filling section are formed in the leading edge section of the composite vane body. Attachment of the metal sheath to the leading edge section can be performed easily with high precision.

Abstract: A distal end portion and a proximal end portion of a guide vane formed from a composite material are respectively supported by connecting support bodies formed from a metal, and the connecting support bodies of the distal end portion and the proximal end portion are connected by a conductive wire while the conductive wire is passed through a space between a leading edge surface of the guide vane and a sheath. In a turbofan jet engine, a lightning current due to a lightning strike can be fended off while a controlling function of a stator vane formed from a composite material is ensured, and an inspection is also easy.

Abstract: A fan rotor blade includes a blade body made from a composite material of a resin and fibers, and having a pressure surface facing one side in a rotation direction and a suction surface facing the other side in the rotation direction. The blade body is provided with a sheath which is more rigid than the blade body and is fixed to the blade body in a state where the sheath covers a leading edge portion of the blade body, which is located on an upstream side in the direction of intake of external air, and the vicinity thereof. A tip end portion of the sheath extends from the leading edge portion side of the blade body to a trailing edge portion side of the blade body. An end portion of the tip end portion of the sheath is flush with the trailing edge portion of the blade body.

Abstract: A fan rotor blade includes a blade body made from a composite material of a resin and fibers, and having a pressure surface and a suction surface. A dovetail capable of being fitted into a fitting groove in a fan disk is provided in a base end of the blade body. The blade body is provided with a sheath. The sheath is more rigid than the blade body and is fixed to the blade body in a state where the sheath covers a leading edge portion of the blade body and the vicinity thereof. The sheath extends in the longitudinal direction of the blade body from a blade root side to a tip end side of the blade body, and a base end portion of the sheath located on the blade root side of the blade body extends to the dovetail.

Abstract: A fan rotor blade includes a blade body constructed of a composite material, a blade root constructed of the composite material, and a sheath attached to a leading edge of the blade body. The sheath includes a sheath main body and a pair of joint flanges, and is segmented into a sheath base segment and a sheath top segment. The sheath top segment has a longer length than a length of the sheath base segment along a span direction. A sheath length of the sheath main body at an assumed impact position with an obstacle is not shorter than 10% chord and not longer than 60% chord. A sheath length of the sheath along an end edge of the fan rotor blade is not shorter than 40% chord. The fan rotor blade possesses sufficient impact resistance and can be simplified and light-weighted.