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Monday, July 8 • 15:30 - 15:50
METHOD OF PREDICTION OF DYNAMIC STABILITY OF GAS-TURBINE ENGINE BLADE ASSEMBLIES FOR SUBSONIC FLUTTER

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The analysis of defects in compressor rotor blades in the development and operation of aircraft gas-turbine engines implies the aerodynamic nature of rotor blade vibrations (in most cases). Flutter is a very dangerous phenomenon, that is why it is necessary to outline the conditions of its occurrence in engine development. This is especially true of modern engine compressor rotor blades with a high aspect ratio and integral joint connection with the blade wheel disk. Despite many existing methods for determination of the conditions of flutter initiation, its prediction at the stage of engine design remains a topical issue. This paper will focus on basic concepts of the express assessment of the dynamic stability limit of gas-turbine compressor blade assemblies to prevent subsonic flutter, as well as the examples of its application.

Moderators
EP

Elsa Piollet

Dr, Polytechnique Montréal
avatar for Mohammad Rafiee

Mohammad Rafiee

Postdoctoral Fellow, Polytechnique Montréal
Mohammad Rafiee received his Ph.D. degree in Mechanical Engineering from the University of Ottawa in 2018. Currently, he is a Postdoctoral Fellow at Polytechnique Montreal in Canada. His research interests are primarily focused on the development of advanced composite materials, smart... Read More →
AR

Annie Ross

Professor, Polytechnique Montreal

Authors

Monday July 8, 2019 15:30 - 15:50 EDT
St-Laurent 8