Parametric Studies of the Flutter Stability Characteristics of Turbomachine Bladings

Kurzfassung

Parametric studies on the unstalled flutter stability characteristics of compressor and turbine cascades are carried out based on typical section two-dimensional aeroelstic models. Flutter stability boundaries and dominant trends in flutter behaviour are presented with emphasis on the effects of (a) single mode structural coupling in bending and torsion, (b) coupling among multiple blade degrees of freedom, (c) mass ratio and structural damping, (d) compressibility, (e) cascade solidity and stagger, and (f) steady aerodynamic blade loading.