| Citation: | GUO Chongjia, FU Wenguang, SUN Peng, et al. Airworthiness compliance method for aero-engine on surge/stall with distortion conditions[J]. Journal of Aerospace Power, 2022, 37（12）：2875-2886 doi: 10.13224/j.cnki.jasp.20210521
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In order to study the verification method of aero-engine’s compliance with the airworthiness terms of surge/stall characteristics under distortion conditions, the distortion test method for engine stability evaluation was applied to the airworthiness field. And a turbofan engine with large bypass ratio was taken as the object, the component characteristics at 0°—30° attack angles were simulated, and the distortion generators with different structures were designed according to the obtained distortion map. The results showed that the designed distortion generator can better simulate the distortion map, aerodynamic performance and flow field characteristics of the fan at different attack angles to a certain extent, and the maximum deviation of stability margin was 4.32%. The relationship between engine surge margin, different attack angles and distortion generator was summarized to determine the stable working range required by airworthiness terms. According to China Civil Aviation Regulations, a method for verifying the compliance of aero-engine surge/stall characteristics with inlet distortion was developed, and its task stage in the model qualification process was defined.
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