Ceramic variable stator blade bushing

The present disclosure relates to systems and methods that include providing a stator blade bushing for a variable stator blade assembly having a movable stator blade and a stator blade housing disposed annularly around the movable stator blade. The bushing includes a flange, a barrel extending from the flange, and a central bore extending through the flange and the barrel, and the bushing is disposed in the housing and annularly disposed around the stator blade. The liner is formed from a ceramic material having a coefficient of thermal expansion (CTE) that is lower than or equal to a CTE of one or more of a stator blade and a housing of the variable stator blade assembly. 本公开涉及系统和方法，该系统和方法包括提供用于可变定子叶片组件的定子叶片衬套，该可变定子叶片组件具有可移动定子叶片和围绕可移动定子叶片环形地设置的定子叶片壳体。该衬套包括凸缘、从凸缘延伸的筒体以及延伸穿过凸缘和筒体的中心孔，并且该衬套设置在壳体中并且围绕定子叶片环形地设置。该衬套由热膨胀系数(CTE)低于或等于可变定子叶片组件的定子叶片和壳体中的一者或多者的CTE的陶瓷材料形成。