Vane outer support ring with no forward hook in a compressor section of a gas turbine engine

A method for servicing a compressor section of a gas turbine engine where an aged support ring and corresponding vanes have been removed from a servicing location of an outer engine casing, the method comprising:

• removing select material from the servicing location of the outer engine casing such that a replacement support ring not having a forward hook can be installed in the servicing location in the place of the aged support ring;
• and
• installing the replacement support ring not having a forward hook in the servicing location comprising securing an aft hook of the replacement support to the outer casing, wherein the aft hook supports the support ring from the outer engine casing, the replacement support ring including a strong back plate spanning between forward and aft walls of the replacement support ring, the strong back plate adapted to effect a reduction in dynamic displacement between the forward and aft walls during operation of the engine, wherein the strong back plate includes a plurality of circumferentially spaced apart corrugations spanning between the forward and aft walls of the support ring from a forward edge of the strong back plate to an aft edge of the strong back plate, the corrugations extending radially toward the main body portion and increasing a structural rigidity of the strong back plate in the axial direction while providing controlled displacement in the radial direction to reduce stress;
• wherein a radially inwardly facing surface of an aft flange extending axially from the aft hook is the sole structure of the support ring that is supported by a radially outwardly facing surface of structure of the outer engine casing or structure affixed to the outer engine casing.