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Experimental investigation of a loaded rotor blade's interaction with a single vortex

Published online by Cambridge University Press:  04 July 2016

C. A. Masson ,
R. B. Green ,
R. A. McD. Galbraith  and
F. N. Coton
C. A. Masson
Affiliation:
Department of Aerospace Engineering , University of Glasgow , Glasgow, UK
R. B. Green
Affiliation:
Department of Aerospace Engineering , University of Glasgow , Glasgow, UK
R. A. McD. Galbraith
Affiliation:
Department of Aerospace Engineering , University of Glasgow , Glasgow, UK
F. N. Coton
Affiliation:
Department of Aerospace Engineering , University of Glasgow , Glasgow, UK
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Abstract

Presented in this paper are the preliminary results from a blade-vortex interaction (BVI) test series conducted in the University of Glasgow's 1·61m x 2·13m closed-return, low-speed windtunnel, in which a single vortex interaction with a rigid, loaded rotor blade was studied. This work is an extension of that by Horner and Galbraith, which describes the flow phenomena present during single vortex interaction with an unloaded blade. The paper presents blade surface pressure data recorded by 72 pressure transducers located in the outer regions of the blade during these interactions. Integrated Cn and Cm1/4 data are also presented to provide a detailed history of a BVI event. In addition, a method of isolating the bound circulation and vortex induced effects is presented, from which it is concluded that for a BVI event the vortex-induced effects are (to a first approximation) independent of rotor pitch setting.

Type
Research Article
Information
The Aeronautical Journal , Volume 102 , Issue 1018 , December 1998 , pp. 451 - 457
Copyright
Copyright © Royal Aeronautical Society 1998 

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References

1. Scheiman, J. and Ludi, L.H. Qualitative evaluation of effect of helicopter rotor-blade tip vortex on blade air loads, NASA Technical Note D-1637, May 1963.Google Scholar
2. McCormick, B.W. and Surendraiah, M. A Study of rotor blade/vortex interactions, The 26th Annual National forum of the Helicopter Society, Washington DC, USA, June 1970.Google Scholar
3. Horner, M.H. and Galbraith, R.A.McD. An examination of vortex convection effects during blade-vortex interaction, Aeronaut J, 1992, 96, (960), pp 373–379.Google Scholar
4. Carradonna, F.X., Lautenschlager, J.L. and Silva, M.J An experi mental study of rotor-vortex interaction, A1AA Paper 88-0045, AIAA 26th Aerospace Sciences Meeting, Reno, Nevada, January 1988.Google Scholar
5. Muller, R.H.G. Special vortices at a helicopter rotor blade, J Amer, HeliSoc, October 1990.Google Scholar
6. Lorber, P.F, Blade-vortex interaction data obtained from a pressure-instrumented Model UH-60A Rotor at the DNW, J Amer Heli Soc, July 1993.Google Scholar
7. Gorton, S.A., Poling, D.R. and Dadone, L. Laser velocimetry and blade pressure measurements of a blade-vortex interaction, J Amer Heli Soc, April 1995.Google Scholar
8. Horner, M.B., Stewart, J.N, Galbraith, R.A.McD., Grant, I. Coton, F. and Smith, G.H. Preliminary results from a particle image velocimetry study of blade-vortex interaction, 19th European Rotorcraft Forum, Cernobbio, Italy, September 1993.Google Scholar
9. Horner, M.B., Stewart, J.N, Galbraith, R.A.McD., Grant, I. and Coton, F. An examination of vortex deformation during blade-vortex interaction utilising particle image velocimetry, 19th Congress of the International Council of the Aero Sciences, Anaheim, California, September 1994.Google Scholar
10. Coton, F.N., De La Iglesia, F., Galbraith, R.A.McD. and Horner, M.B. A three-dimensional model of low speed blade vortex interaction, 20th European Rotorcraft Forum, Amsterdam, October, 1995.Google Scholar
11. Jones, H.E. and Caradonna, F.X. Full potentialmodelling of blade-vortex interactions, Vertica, 1988, 12, (1/2), pp 129–145.Google Scholar
12. McCroskey, W.J. Some rotorcraft applications of computational fluid dynamics, NASA Technical Memorandum 100066, March 1988.Google Scholar
13. Srinivasan, G.R. and McCroskey, W.J. Numerical simulations of unsteady airfoil-vortex interactions, Vertica, 1987, 11, (1/2), pp 3–28.Google Scholar
14. Conlisk, A.T. Modern helicopter aerodynamics, Annual Review of Fluid Mechanics, 1997,29, pp 515–567.Google Scholar
15. Coton, F., Galbraith, R.A.McD., Grant, I. and Hurst, D. Analysis of complex flow fields by animation of piv and high resolution unsteady pressuredata,RTO/AGARDFluidDynamicsPanelsymposium, Advanced Aerodynamic Measurement Technology, September 1997.Google Scholar