Method of GTE compressor finalizing based on test results

Abstract

A method for finalizing compressors based on test results (both standalone and integrated into a gas turbine engine) is considered. It is shown that it is advisable to consider changes along the flow path (FP) and the FP height not only in the total pressure and temperature, but also in the isentropic total temperature and ideal total pressure. This allows for an analysis of changes in σ, the total pressure recovery ratio, along the compressor FP, within stages, and within individual blade rows (BR). To improve compressor efficiency, it is proposed to adjust the work distribution among stages, thereby changing cascade solidity, construction angles, exit angles, and reactivity levels so that the σ ratio of all stages is identical, and within each stage, the σ ratios of all BRs are also identical. Furthermore, it is necessary to ensure that the σ ratios are identical in different BR sections along the FP height. It is also proposed to ensure that the points for the end sections of the compressor rotor blades (RB) are located on the optimal lines identified in the Smith charts for the compressors. Additionally, the positions of the points for the average-mass sections of the compressor stages are checked on the same lines, but identified in the Smith charts for the mid-sections. The possibility of increasing compressor efficiency is verified after plotting the compression process in the compressor in T-s (or i-s) coordinates. doi 10.54708/19926502_2026_30311358