Flutter Mechanisms in Low Pressure Turbine Blades-Reference-Cited by-同舟云学术

Flutter Mechanisms in Low Pressure Turbine Blades

Published:1999-10-20 Issue:1 Volume:122 Page:82-88
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Nowinski M.¹,Panovsky J.²

Affiliation:

1. Swiss Federal Institute of Technology, EPFL-DGM-LTT, Ecublens 1015, Lausanne, Switzerland

2. Honeywell Aerospace, P.O. Box 52181, Phoenix, AZ 85072-2181

Abstract

The work described in this paper is part of a comprehensive research effort aimed at eliminating the occurrence of low pressure turbine blade flutter in aircraft engines. The results of fundamental unsteady aerodynamic experiments conducted in an annular cascade are studied in order to improve the overall understanding of the flutter mechanism and to identify the key flutter parameters. In addition to the standard traveling wave tests, several other unique experiments are described. The influence coefficient technique is experimentally verified for this class of blades. The beneficial stabilizing effect of mistuning is also directly demonstrated. Finally, the key design parameters for flutter in low pressure turbine blades are identified. In addition to the experimental effort, correlating analyses utilizing linearized Euler methods demonstrate that these computational techniques are adequate to predict turbine flutter. [S0742-4795(00)01301-6]

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/122/1/82/5548174/82_1.pdf

Reference17 articles.

1. Bo¨lcs, A., and Schla¨fli, D., 1984, “Flutter Phenomena in a Transonic Turbine Cascade,” Unsteady Aerodynamics of Turbomachines and Propellers, Proceedings, Symposium, Cambridge, England, pp. 411–425, September 24–27, 1984.

2. Buffum, D. H., and Fleeter, S., 1990, “Aerodynamics of a Linear Oscillating Cascade,” NASA Technical Memorandum 103250.

3. Panovsky, J., Nowinski, M., and Bo¨lcs, A., 1997, “Flutter of Aircraft Engine Low Pressure Turbine Blades,” presented at the 8th International Symposium of Unsteady Aerodynamics and Aeroelasticity of Turbomachines, Stockholm, Sweden, Sept. 14–18, 1997.

4. Bo¨lcs, A., 1983, “A Test Facility for the Investigation of Steady and Unsteady Transonic Flows in Annular Cascades,” ASME Paper 83-GT-34.

5. Kirschner, A., Fosco, B., and Muller, E., 1980, “Control of Vibration in Aeroelastic Experiments,” Communication de l’ITA/EPFL, No. 10, pp. 285–295.

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