The Flexure Torsion Flutter of Aerofoils in Cascade : 2nd Rcport, Relations between Flutter Velocity and Cascade Conditions

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概要

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• 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.

• 一般社団法人日本機械学会の論文

著者

• Tanaka Hideo

  Institute Of Life Science And Bioengineering Graduate School Of Life And Environmental Science Unive

• Hanamura Yoji

  Institute Of Space And Aeronautical Science University Of Tokyo

• Hanamura Yoji

  Institue Of Interdisciplinary Research Faculty Of Engineering University Of Tokyo

• Tanaka Hideo

  Institute For Biological Resources And Functions National Institute Of Advanced Industrial Science A

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