22nd Congress of International Council of the Aeronautical Sciences, Harrogate, UK, 28 August - 1st September, 2000
Paper ICAS 2000-1.8.2

AERODYNAMICAL AND DYNAMICAL INVESTIGATION OF HELICOPTER ROTORS

T.Gausz
TU Budapest, Hungary

Keywords: helicopter, rotor, aerodynamics, dynamics, elasticity

The present article deals with rotor dynamics and aerodynamics. The combined blade-element and momentum theory and the ONERA semi empirical model were applied in the aerodynamical calculations. The unsteady and compressibility effects can be calculated by using the ONERA semi empirical aerodynamic model. The equation of the flapping motion was solved by applying the induced velocity field. So the generalised equilibrium path of the rotor blades was approximated by an asymptotic solution. The equations of the rotor blade motion were solved in linear and non-linear case too. Also the equation of the feathering was solved in order to find the

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