| CPC F01D 5/282 (2013.01) [F01D 5/147 (2013.01); F05D 2300/6034 (2013.01); F05D 2300/612 (2013.01)] | 18 Claims |
|
1. A gas turbine engine comprising:
a fan section, a compressor section, combustor section, and turbine section in serial flow arrangement, and defining an engine centerline; and
a composite airfoil assembly provided in one of the fan section, the compressor section, or the turbine section, the composite airfoil assembly comprising:
a core defined by a first three-dimensional weave pattern or a first porous foam structure, the core defining a first stiffness;
a woven layer located exterior of the core, the woven layer defined by a second three-dimensional weave pattern, the woven layer defining a second stiffness; and
a laminate skin located exterior of the woven layer, the laminate skin defining a third stiffness;
wherein the second stiffness is between the first stiffness and the third stiffness is defined in at least one direction defining a stiffness transition between the core and the laminate skin.
|
|
10. A core for an airfoil for use in a gas turbine engine, the core comprising:
an interior core including either a first weave pattern or a porous foam pattern, the core defining a first stiffness;
at least one three-dimensional woven layer provided on the interior core, the at least one three-dimensional woven layer defined by a second weave pattern that is different than the first weave pattern and defining a second stiffness; and
a laminate skin provided on the at least one three-dimensional woven layer and defining a third stiffness;
wherein the second stiffness is between the first stiffness and the third stiffness defining a stiffness transition between the core and the laminate skin.
|
|
14. A gas turbine engine comprising:
a fan section, a compressor section, a combustor section, and a turbine section in serial flow arrangement, and defining an engine centerline; and
a composite airfoil assembly rotatable about the engine centerline, the composite airfoil assembly comprising:
a core having a porous geometry or a woven geometry, the core defining a first stiffness;
at least one three-dimensional woven layer located on the core and defining a second stiffness; and
a laminate skin provided exterior of the at least one three-dimensional woven layer and defining a third stiffness;
wherein the second stiffness is between the first stiffness and the third stiffness defining a stiffness transition between the core and the laminate skin.
|