Method for improving turbine compressor performance

An improved stator vane assembly for increasing an efficiency of a compressor of a gas turbine engine, the compressor having a first stator vane assembly selected for replacement, the first stator vane assembly having a first plurality of fixed stator vanes, each fixed stator vane of the first plurality of fixed stator vanes having a first vane angle relative to a center axis of the gas turbine engine, the improved stator vane assembly comprising:

• an improved stator assembly ring having a central axis surrounded by an interior surface forming a cylindrical surface of revolution and having a plurality of perforations formed around an inner perimeter of the improved stator assembly ring;
• a second plurality of stator vanes are inserted into the plurality of perforations and brazed into the plurality of perforations, wherein each stator vane of the second plurality of stator vanes has a second vane angle less than the first vane angle when inserted into the plurality of perforations, and
• wherein the compressor produces an increased power ratio and increased flow rate when the improved stator vane assembly is used in place of the first stator vane assembly.

An improved stator vane assembly for increasing an efficiency of a compressor of a gas turbine engine, the compressor having a first stator vane assembly selected for replacement, the first stator vane assembly having a first plurality of fixed stator vanes, each fixed stator vane of the first plurality of fixed stator vanes having a first vane angle relative to a center axis of the gas turbine engine, the improved stator vane assembly comprising:

• an improved stator assembly ring having a central axis surrounded by an interior surface forming a cylindrical surface of revolution and having a plurality of perforations formed around an inner perimeter of the improved stator assembly ring;
• a second plurality of stator vanes for insertion into the plurality of perforations, wherein each stator vane of the second plurality of stator vanes has a second vane angle three degrees less than the first vane angle when inserted into the plurality of perforations, and
• wherein the compressor produces an increased power ratio and increased flow rate when the improved stator vane assembly is used in place of the first stator vane assembly.