某型发动机压气机最先失速级判定的试验研究

针对某型发动机旋转失速 /喘振问题 ,通过试验的方法 ,寻找引起该型发动机失速起始级和在叶片上的位置 ,并利用 Matlab语言编写了试验数据处理程序。根据发动机失速的机理 ,提出了失速级的判别准则 ,利用频谱分析和时域分析的方法 ,对试验数据进行了处理与分析 ,结果发现该型发动机最先在第三级叶片上发生失速 ,且为全叶高失速

An Experimental Research on Identification of the First Stall Stage of a Certain Engine

Aiming at surge problem of a certain engine,this paper tries to find out the starting stage resulting in rotating stall/surge in an experimental way.A data processing program based on Matlab language is developed.A criterion based on stall theories is proposed to identify the first stall stage of the compressor.During data processing,spectrum theories and time domain methods are employed.The results of experiment show that the engine stalls first at the 3rd compressor stage,and stalls simultaneously at different height of blades.The followed experiments proved the verity of the judgement.