关键词: 温度畸变;温升率;稳定裕度损失

Abstract: In order to abtain the performance of an aero-engine under the condition of temperature distortion,this paper presents the numerical investigation of the effect of the inlet temperature distortion upon the stability and performance of aero-engine using the effective distortion-transfer model.The calculation results indicate that three group of temperature increase rates investigated exceeded the critical value.The critical range of the high temperature section is about 180° circumferential.The engine sensibility coefficients to temperature distortion are within the statistical range,which shows that engine has the ability of anti-temperature distortion.The anti-surge system must used when there is excessive temperature distortion.

Key words: Temperature distortion;Temperature increase rate;Stability margin degradation