21st Congress of International Council of the Aeronautical Sciences, Melbourne, Australia, 13-18 September, 1998
Paper ICAS-98-2.5.3

OPTIMAL MAIN HELICOPTER ROTOR PROJECTION MODEL OBTAINED BY VISCOUS EFFECTS AND UNSTEADY LIFT SIMULATION

Mitrovic C.
University of Belgrade, F. R. of Yugoslavia

Keywords: helicopter rotor projection model, viscous effects, unsteady lift simulation

This paper presents a model of airfoil which allows obtaining a method for optimal main helicopter rotor projection by viscous effect and unsteady Lift simulation through algorithm and set of program entireties, applied directed to ideological and main project of helicopter rotor. Numerical analysis considerations in this paper call be applied, on basis of a real rotors theoretical consideration, whit sufficient accuracy in analysis and constructive realizations of helicopter rotor in real conditions. The method for unsteady viscous flow simulations by inviscid techniques is developed. The based aim of this paper is to determine helicopter rotor blade lift with most possible accuracy by using singularity method and to define such optimal conception ,model of aerodynamic rotor projection which is corresponding to rotor behavior in real condition and with sufficiently quality from aspect of engineer use.

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