Abstract:
A method of forming a composite component. The method includes laying up a plurality of composite plies to form a composite ply core. Another step of the method includes partially processing the composite ply core to form a green state core. The method further includes machining a cooling cavity on an exterior surface of the green state core. Additionally, the method includes inserting a filler material within the cooling cavity. A further step includes wrapping composite plies around the green state core and filler material to secure the filler material and form an outer enclosure. In one step, the method includes processing the green state core and outer enclosure to form the composite component.
Abstract:
A component for a gas turbine engine including a core and an outer enclosure. The core includes an exterior surface extending along a length between a first end and a second end and at least partially defines a cooling cavity on the exterior surface extending from the first end along at least a portion of the length. The cooling cavity is fluidly coupled to an air supply at the first end. The outer enclosure includes an outer surface. The outer enclosure is positioned outside the core and extends from the first end of the core along at least a portion of the length of the core and at least partially defines the cooling cavity.
Abstract:
A method of forming a ceramic matrix composite (CMC) fastener, the method comprising: shaping a preform to form a green fastener; applying one or more layers to an outer surface of the green fastener to form a layered green fastener; and finishing the layered green fastener to form the CMC fastener.
Abstract:
Flowpath assemblies, methods of forming flowpath assemblies, and hypersonic vehicles are provided. For example, a flowpath assembly for a combustor comprises a tube array comprising a plurality of tubes, a joining material disposed between adjacent tubes of the plurality of tubes to join together the adjacent tubes, a flowpath layer, and an outer layer. The plurality of tubes and the joining material are disposed between the flowpath layer and the outer layer. The flowpath layer defines a combustion flowpath. Each of the plurality of tubes, the joining material, the flowpath layer, and the outer layer are formed from a composite material. The combustor comprising the flowpath assembly may be included in a ramjet engine of a hypersonic vehicle. A fabrication method may include laying up composite plies to form a tube array including the plurality of tubes, the joining material, and the flowpath and outer layers.
Abstract:
A component for a gas turbine engine including a core and an outer enclosure. The core includes an exterior surface extending along a length between a first end and a second end and at least partially defines a cooling cavity on the exterior surface extending from the first end along at least a portion of the length. The cooling cavity is fluidly coupled to an air supply at the first end. The outer enclosure includes an outer surface. The outer enclosure is positioned outside the core and extends from the first end of the core along at least a portion of the length of the core and at least partially defines the cooling cavity.
Abstract:
A method of forming a ceramic matrix composite (CMC) fastener, the method comprising: shaping a preform to form a green fastener; applying one or more layers to an outer surface of the green fastener to form a layered green fastener; and finishing the layered green fastener to form the CMC fastener.
Abstract:
A method of forming a ceramic matrix composite (CMC) fastener, the method comprising: shaping a preform to form a green fastener; applying one or more layers to an outer surface of the green fastener to form a layered green fastener; and finishing the layered green fastener to form the CMC fastener.
Abstract:
A method of forming a composite component. The method includes laying up a plurality of composite plies to form a composite ply core. Another step of the method includes partially processing the composite ply core to form a green state core. The method further includes machining a cooling cavity on an exterior surface of the green state core. Additionally, the method includes inserting a filler material within the cooling cavity. A further step includes wrapping composite plies around the green state core and filler material to secure the filler material and form an outer enclosure. In one step, the method includes processing the green state core and outer enclosure to form the composite component.
Abstract:
A process for producing airfoil components containing ceramic-based materials and having a tip cap. The process entails forming an airfoil portion of the component from an airfoil portion material that contains a precursor of a ceramic-based material. The airfoil portion material defines concave and convex walls of the airfoil portion, and the concave and convex walls define a tip region of the airfoil portion and at least one cavity within the airfoil portion. At least a first ply is formed that contains a precursor of a ceramic-based material, and the first ply at least partially closes the cavity at the tip region of the airfoil portion. The airfoil portion material and the first ply are then cured so that the first ply forms a tip cap that closes the cavity and the precursors of the airfoil portion material and first ply are converted to the ceramic-based materials thereof.
Abstract:
A process for producing airfoil components containing ceramic-based materials and having a tip cap. The process entails forming an airfoil portion of the component from an airfoil portion material that contains a precursor of a ceramic-based material. The airfoil portion material defines concave and convex walls of the airfoil portion, and the concave and convex walls define a tip region of the airfoil portion and at least one cavity within the airfoil portion. At least a first ply is formed that contains a precursor of a ceramic-based material, and the first ply at least partially closes the cavity at the tip region of the airfoil portion. The airfoil portion material and the first ply are then cured so that the first ply forms a tip cap that closes the cavity and the precursors of the airfoil portion material and first ply are converted to the ceramic-based materials thereof.