Abstract
The objective of this work is to assess the accuracy of the aerodynamic modeling used in the flutter analysis of helicopter rotors in hover. A boundary-element formulation for unsteady potential incompressible flows is introduced. The results obtained for the aerodynamic forces, for pitch and flap, are compared with those typically used in the flutter analysis of rotors, (which are obtained using a strip-theory extension of Loewy’s formulation [3], although a boundary-element formulation has been used by Kwon [2] for a flutter analysis). The results demonstrate that Loewy’s formulation [3] yields results that are considerably different from those obtained with the more accurate model introduced here.
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References
Johnson, W., (1980), “Helicopter Theory,” Princeton University Press, Princeton NJ.
Kwon, O. J., (1988), “A Technique for the Prediction of Aerodynamics and Aeroelasticity of Rotor Blades,” Ph.D. Thesis, Georgia Institute of Technology, Atlanta, Georgia.
Loewy, R. G., (1957), “A Two-Dimensional Approximation of Unsteady Aerodynamics of Rotary Wings,” Journal of Aeronautical Sciences, Vol. 24, No. 2, pp. 81–92, 144.
Mastroddi, F., (1989), “Metodo degli Elementi al Contorno per l’Analisi Aerodinamica ed Aeroelastica di Ali e Rotori in “Hover” nel Dominio della Frequenza,” Tesi di Laurea, Università degli Studi “La Sapienza”, Roma, Italy.
Miller, R. H., and Ells, C. W., (1956), “Helicopter Blade Vibration and Flutter,” Journal of American Helicopter Society, Vol. 1, No. 3, pp. 19–38.
Morino, L., Bharadvaj, B. K., “A Unified Approach for the Potential and Viscous Free-Wake Analysis of Helicopter Rotors,” Vertica, Vol. 12, No. 1/2, pp. 147–154, 1988.
Morino, L., Chen, L. T., and Suciu, E. O., (1975) “Steady and Oscillatory Subsonic and Supersonic Aerodynamic around Complex Configuration,” AIAA Journal, Vol. 13, pp. 368–374.
Venkatesan, C., and Friedmann, P. P., (1985), “New Approach to Finite-State Modeling of Unsteady Aerodynamics,” AIAA Journal, Vol. 24, No. 12, pp. 1889–1897.
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© 1990 Springer-Verlag Berlin Heidelberg
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Mastroddi, F., Morino, L. (1990). Time and Frequency Domain Aerodynamics for Flutter of Helicopter Rotors in Hover. In: Annigeri, B.S., Tseng, K. (eds) Boundary Element Methods in Engineering. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-84238-2_2
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DOI: https://doi.org/10.1007/978-3-642-84238-2_2
Publisher Name: Springer, Berlin, Heidelberg
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