8(5)04

Nauka innov. 2012, 8(5):38–48
https://doi.org/10.15407/scin8.05.038

A.P. Zinkovskii, V.A. Tsymbalyuk
G.S. Pisarenko Institute for Problems of Strength NAS of Ukraine, Kyiv

 

An Experimental- and-Computational Complex for Predicting the Stability of Blade Assemblies Against Subsonic Flutter

Section: Scientific and Technical Innovative Projects of National Academy of Sciences of Ukraine
Language: Ukrainian
Abstract: The basic principles of the experimental-and-computational complex for predicting the subsonic flutter stability of aircraft gas turbine compressor blading are stated. Based on the approaches of physical modeling of phenomena observed under full-scale conditions, the similarity criteria are defined, which allow modeling the behavior of blade assemblies at their interaction with flow. The methodology for the experimental determination of non-stationary aerodynamic forces and moments acting on blades during their in-flow vibrations; the calculation of the dynamic stability of a blade assembly against flutter; the aerodynamic rig design and peculiar features of its components to perform testing of airfoil cascades are described. The results of testing of the developed experimental-and-computational complex are presented.
Key words: blade assembly, modeling, subsonic flutter, aerodynamic stability, prediction.