Abstract: A gas turbine includes a compressor bleed air system that includes a compressor shroud, a compressor bleed air plenum, and a plurality of compressor bleed air passages arranged through the compressor shroud that provide fluid communication between the compressor airflow passage and the compressor bleed air plenum. The plurality of compressor bleed air passages are arranged circumferentially spaced apart from one another, where a first compressor bleed air passage and a second compressor bleed air passage circumferentially adjacent to one another are spaced apart a first angular spacing, and the respective inlets of at least a portion of a remainder of the plurality of compressor bleed air passages are circumferentially spaced apart from one another a second angular spacing, the second angular spacing being less than the first angular spacing.

Abstract: A compressor bleed port apparatus includes: a compressor shroud which defines a boundary between a primary flowpath and a plenum; a bleed port including one or more apertures passing through the compressor shroud, each of the one or more apertures having an inlet communicating with the primary flowpath and an outlet communicating with the plenum, and extending along a respective centerline. Each of the one or more apertures is bounded by sidewalls, and includes a diffuser section in which the sidewalls diverge from each other in a downstream direction; A diffusing angle between the sidewalls varies over the length of the diffuser section.

Abstract: A compressor bleed port apparatus includes: a compressor shroud which defines a boundary between a primary flowpath and a plenum; a bleed port including one or more apertures passing through the compressor shroud, each of the one or more apertures having an inlet communicating with the primary flowpath and an outlet communicating with the plenum, and extending along a respective centerline. Each of the one or more apertures is bounded by sidewalls, and includes a diffuser section in which the sidewalls diverge from each other in a downstream direction; A diffusing angle between the sidewalls varies over the length of the diffuser section.