Airfoil cover system

摘要

An example airfoil for a gas turbine engine includes a body having a first surface extending from a first edge to a second edge and a cavity disposed in the body. A first cover is at least partially disposed within the cavity. The first cover includes a first portion cooperates with a corresponding second portion. A second cover covers the first cover and forms at least a portion of the first surface with the body. The first cover is disposed between the body and the second cover. The first cover and the second cover have a different coefficient of thermal expansion than the body.

主权项

1. An airfoil for a gas turbine engine comprising:
a body having a first surface extending from a first edge to a second edge; a cavity disposed in the body; a first cover at least partially disposed within the cavity, the first cover comprising a first portion cooperating with a corresponding second portion; a second cover covering said first cover and forming at least a portion of the first surface with said body, wherein the first cover is disposed between the body and the second cover, wherein the first cover and the second cover have a different coefficient of thermal expansion than the body; and wherein a flexible material is disposed in a gap between the first portion and the second portion, the gap defined between corresponding edges of the first portion and the second portion.