Experimental-numerical investigation of the dynamic stability of flexural-torsional vibrations of compressor blades under conditions of attached and separated flow. Part 1. Procedure and equipment for the determination of nonstationary aerodynamic characteristics |
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Authors: | A L Stel’makh A D Len A P Zinkovskii |
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Affiliation: | (1) Pisarenko Institute of Problems of Strength, National Academy of Sciences of Ukraine, Kiev, Ukraine |
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Abstract: | We present the results of investigations of the aerodynamic stability of flexural-torsional vibrations of compressor blades
under conditions of attached and separated flow with regard for the cross and mutual aerodynamic links of the blades in a
broad range of variations of the phase shift, the ratio of the amplitudes of translational and angular components of their
displacements, and the angle of attack. A procedure and equipment used for the experimental determination of the nonstationary
aerodynamic characteristics of the blades are described on the basis of the model of flat-plate airfoil cascades.
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Translated from Problemy Prochnosti, No. 2, pp. 129–142, March–April, 2007. |
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Keywords: | compressor blades flat-plate airfoil cascade flexural-torsional vibrations nonstationary aerodynamic characteristics aerodynamic stability |
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