An Experimental- and-Computational Complex for Predicting the Stability of Blade Assemblies Against Subsonic Flutter
DOI:
https://doi.org/10.15407/scin8.05.038Keywords:
blade assembly, modeling, subsonic flutter, aerodynamic stability, prediction.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.
References
Holshhevnikov K.V., Emin O.N., Mitrohin V.T. Teorija i raschet aviacionnyh lopatochnyh mashin. Moskva: Mashinostroenie, 1986. 432 s. [in Russian].
Cimbaljuk V.A., Zin'kovskij A.P., Poberezhnikov A.V. Jeksperimental'no-raschetnaja ocenka dinamicheskoj ustojchivosti lopatochnyh vencov rabochih koles kompressorov gazoturbinnyh dvigatelej . Probl. prochnosti. 2001. No. 6. S. 15-28 [in Russian].
Tereshhenko Ju.M. Ajerodinamika kompressornyh reshetok. Moskva: Mashinostroenie, 1979. 118 s. [in Russian].
Lamper R.E. Vvedenie v teoriju flattera. Moskva: Mashinostroenie, 1990. 144 s. [in Russian].
Abramovich G.N., Kurzin V.B., Saren V.Je. Prikladnaja gazovaja dinamika. Moskva: Nauka, 1976. 888 s. [in Russian].
Gorelov D.N. Ajerodinamika reshetok v nestacionarnom potoke. Novosibirsk: Nauka, 1971. 272 s. [in Russian].
Tsimbaliyk V. Flutter of dynamically dissimilar compressor blading in a separating flow. Engineering aero-hyd roelas ticity. 2nd Int. Sonf. EAHE. Pilsen-Czech Republic June 6-10. 1994. P. 182-187.
Cimbaljuk V.A. Metodika izmerenija nestacionarnyh ajerodinamicheskih sil i momentov na vibrirujushhih profiljah reshetki . Probl. prochnosti. 1996. No. 2. S. 100-109 [in Russian].
