摘要:
A composite wear pad (300, 306; 520) for being coupled to a slider block (204; 510) of a convergent nozzle of a gas turbine engine (100) includes a high heat capacity composite (301; 505) having a resin (602) and a plurality of carbon fibers (600) bonded together by the resin (602). The composite wear pad (300, 306; 520) also includes a first/second rod (404/405) coupled to the high heat capacity composite (301; 505) at a first/second axial end (460/463) of the composite wear pad (300, 306; 520) such that the first axial end (460) and the second axial end (463) of the composite wear pad (300, 306; 520) each have an end thickness (452) that is greater than a middle thickness of the composite wear pad (300, 306; 520).
摘要:
A blocker door assembly for use in a gas turbine engine includes a facesheet including a plurality of openings to facilitate noise attenuation and a body portion coupled to the facesheet. The body portion includes a backsheet integrally formed with a honeycomb core, wherein the body portion is molded from a thermoplastic material.
摘要:
A blade assembly comprises a blade (120) and one or more wear pads (170, 172). The blade has an airfoil (122) having a leading edge (126), a trailing edge (128), a pressure side (130), a suction side (132), and extending from an inboard end to a tip (125). The blade further includes an attachment root (124). The one or more wear pads are along the attachment root. The one or more wear pads have a plurality of slits (228, 230 242).
摘要:
A fan assembly for a gas turbine engine is disclosed. The fan assembly may include a rotor, a plurality of airfoils extending radially from the rotor, and a platform surrounding the rotor and including a surface that defines a flow path between the plurality of airfoils. The platform may be configured to be disposable during a life of the gas turbine engine.
摘要:
A method for filling cooling holes in a component of a gas turbine engine is disclosed. The component may include a plurality of first cooling holes extending through the wall of the component. The method may comprise the steps of exposing the outer surface of the component, filling the plurality of first cooling holes with a polyimide, curing the polyimide to block the passage of cooling fluid through the plurality of first cooling holes, and applying a thermal bather coating over the outer surface of the component. The method may further include the step of installing a second plurality of cooling holes in the wall of the component wherein the plurality of second cooling holes penetrate the thermal barrier coating and the wall of the component and allow cooling fluid to pass therethrough.
摘要:
A dissolvable jet vane (22/30) is a composite structure, having a support frame (38), a plug leading edge (40) connected to the forward edge (42) of the frame (38), and an insulation layer (44) on the side walls of the support frame (38). The dissolvable jet vane materials withstand the pressure and thermal loads associated with missile steering during the first few seconds of rocket boost until the missile attains sufficient speed to use conventional external aerodynamic control fins for steering control. Once control passes to the external fins, the jet vanes rapidly and uniformly dissolve in the exhaust stream. The dissolvable jet vane provides a lightweight, reliable means of removing steering jet vanes from the exhaust stream of a solid rocket motor nozzle.
摘要:
The present invention provides, in one embodiment, an annular turbine seal for disposition in a turbine between a rotatable component (110) having an axis of rotation and a turbine housing (120) about the same axis of rotation. The turbine seal has a plurality of arcuate seal carrier segments (140) that have an abradable portion (150) secured to the seal carrier segments (140). In addition, at least one spring (185) is disposed on the seal carrier segment (140) to exert a force and maintain the seal carrier segment (140) adjacent to the rotatable component.
摘要:
A composite wear pad (300, 306; 520) for being coupled to a slider block (204; 510) of a convergent nozzle of a gas turbine engine (100) includes a high heat capacity composite (301; 505) having a resin (602) and a plurality of carbon fibers (600) bonded together by the resin (602). The composite wear pad (300, 306; 520) also includes a first/second rod (404/405) coupled to the high heat capacity composite (301; 505) at a first/second axial end (460/463) of the composite wear pad (300, 306; 520) such that the first axial end (460) and the second axial end (463) of the composite wear pad (300, 306; 520) each have an end thickness (452) that is greater than a middle thickness of the composite wear pad (300, 306; 520).