Measurement of low-frequency nonsteady aerodynamic loads
The article describes a two-component aerodynamic tensometric balance for measuring steady and low-frequency nonsteady aerodynamic forces and moments acting on the investigated object with specified regularity of nonuniformity of the oncoming flow, in particular in case of vertical and/or horizontal sinusoidal or random gusts. The article explains the main demands on the design so as to enhance the accuracy and reliability of measurements, and also design solutions ensuring that the requirements are met.
KeywordsAerodynamic Force Design Solution Aerodynamic Load Oncoming Flow
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- 1.Commerford and Karta, “Nonsteady aerodynamic reaction of a two-dimensional profile to excitation with high reduced frequency,” (translated from English), Aérokosmonavticheskaya Tekhnika, No. 1, 51–58 (1974).Google Scholar
- 2.P. F. Lober and Yu. É. Kovert, “Nonsteadiness of pressure on a profile induced by periodic perturbations of flow,” (translated from English), Aérokosmonavticheskaya Tekhnika, No. 4, 15–23 (1983).Google Scholar
- 3.J. Gostelow, The Aerodynamics of Turbine Blading. Ch. 8. Separating and Nonsteady Flow [Russian translation], Mir, Moscow (1987).Google Scholar
- 4.G. S. Samoilovich, Nonsteady Flow around and Aeroelastic Vibrations of Turbine Bladings [in Russian], Nauka, Moscow (1969).Google Scholar
- 5.G. S. Samoilovich and A. A. Sidorov, “Experimental study of aerodamping with forced vibrations of blades,” Trudy Moskovskogo Énergetichesogo Instituta, No. 99, 114–119 (1972).Google Scholar
- 6.A. E. Korostelev, “Experimental investigation of aerodynamic interaction in vibrating blading,” Probl. Prochn., No. 8, 34–40 (1974).Google Scholar
- 7.A. V. Dunaev and A. A. Kaminer, “Experimental study of hydrodynamic damping of torsional vibrations of blades of a flat plane cascade under conditions of flow separation. Aeroelasticity of turbine blades,” Trudy TsIAM, No. 953, 102–112 (1981).Google Scholar
- 8.A. A. Kaminer, A. L. Stel'makh, and A. D. Len, “Experimental investigation of the boundary of torsional free vibrations of compressor blades due to blading flutter. Aeroelasticity of turbine blades,” Trudy TsIAM, No. 1127, 96–104 (1985).Google Scholar
- 9.A. A. Kaminer, V. A. Tsimbalyuk, and A. A. Kovalenko, Experimental Determination of the Aerodynamic Forces and Moments on Blades Induced by Bending and Torsional Vibrations [in Russian], Preprint, AN USSR Institut Problem Prochnosti, Kiev (1989).Google Scholar