空军工程大学学报（自然科学版）2011，Vol.12Issue(3)：1-5,5.DOI:10.3969/j.issn.1009-3516.2011.03.001
某型航空发动机对插板式进气畸变的响应
An Aero -engine Response to the Inserted- board Air Flow Inlet Distortion
摘要
Abstract
In order to acquire an accurate aero -engine stability response model against airflow inlet distortion, the following steps are taken. Analyzing the stable total - pressure aberrance and turbulence distribution produced by the inserted -board airflow inlet distortion of a turbofan engine. Transforming the stable total pressure distortion and section pulse pressure into pressure - exciting waves at a set of frequencies. Through frequency spectrum analysis,the lowest steady pressure distortion waves'frequency and the biggest amplitude value are obtained, which are of the crucial factor that makes the engine lose its stability. Modifying the waves with a one - class response model and a parallel compressor model, a modified surging boundary is obtained. Calculating the high and low compressors'shifting process of operating points respectively when the engine is stalling gradually; Comparing the calculated result with that of the engine's experimental data, it is found that the results are similar.关键词
航空发动机/进气畸变/激励/动态模型Key words
aero - engine/ air inlet flow distortion/ exciting/ dynamic model分类
航空航天引用本文复制引用
江勇,陈戈,孔卫东,梅飞,郑铁军..某型航空发动机对插板式进气畸变的响应[J].空军工程大学学报（自然科学版）,2011,12(3):1-5,5.基金项目
国家部委基金资助项目(07CJJ103) （07CJJ103）
