Abstract
Recently the mass ratio and natural frequency of the blade in cascade of turbo-jet engin became so small that we made the theoretical and experimental investigation of the flutter problem of cascade by treating it as the oscillation system with two degrees of freedom, and derived many interesting results about the effects of cascade condition on the critical flutter speed and flutter mode. In this 2nd report, using the computational results of the aerodynamic derivatives already shown in the 1st report, the effects of cascade stagger angle, solidity, attack angle (or steady circulation), mass ratio of blade, the ratio of natural frequency of flexural and torsional vibration and position of elastic axis on the critical flutter speed and flutter mode are clarified in the case of cascade with flat plates. And also the effects of camber of blade (or distribution of steady vorticity) and the direction of flexural oscillation on critical flutter speed are shown in a special case.
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