Compressor Instability with Integral Method : study on the propagation of inlet flow distortion in axial compressor using an integral method, stall prediction of in flight compressor due to flaming of refueling leakage near inlet, parametric study of inlet distortion propagation in compressor with integral approach and taguchi method, development of novel integral method for prediction of distorted inlet flow propagation in axial compressor, parametric study of greitzer’s instability flow model throhgh compressor system using taguchi method, compressor characteristics, effects of rotor blade speed, mass flow rate.