Abstract: A structure for supporting an array of stator vanes in an axial flow rotary machine is disclosed. Various construction details related to machine efficiency and machine durability are developed. In one structure, both the concentricity of the ring with respect to the axis of the engine and the diameter of the ring are unaffected by thermal and mechanical distortions of the outer case. A spline-type connection is formed between the ring and the outer case.

Abstract: A seal structure between a circumferentially extending array of stator vanes and an outer case is disclosed. Various construction details that allow the seal structure to accommodate differences in axial and radial growth between the outer case and the vane array are developed. A continuous ring disposed between the vane array and the outer case cooperates with a first seal member to block leakage of working medium between the ring and the vane array. The continuous ring cooperates with a second seal member to block leakage of the working medium between the ring and the outer case.