Turbine bucket for use in gas turbine engines and methods for fabricating the same

摘要

A turbine bucket for use with a turbine engine. The turbine bucket includes an airfoil that extends between a root end and a tip end. The airfoil includes an outer wall that defines a cavity that extends from the root end to the tip end. The outer wall includes a first ceramic matrix composite (CMC) substrate that extends a first distance from the root end to the tip end. An inner wall is positioned within the cavity. The inner wall includes a second CMC substrate that extends a second distance from the root end towards the tip end that is different than the first distance.

主权项

1. A turbine bucket for use with a turbine engine, said turbine bucket comprising:
an airfoil extending between a root end and a tip end, said airfoil comprising:
an outer wall defining a cavity extending from said root end to said tip end, said outer wall comprising a first ceramic matrix composite (CMC) substrate extending a first distance from said root end to said tip end; andan inner wall positioned within said cavity, said inner wall comprising a second CMC substrate extending a second distance from said root end towards said tip end that is different than said first distance, wherein said first distance is greater than said second distance such that a tip pocket is defined at said tip end to facilitate reducing a flow of air across said tip end.